your reasonning is almost correct...
save that as far as I can remember, your math is off.
well not your maths, but your comprehension of the mechanism (if it didn't change from FFH ice version)
gpp are given by additionning number of ggp points.
% chance of emergence per type is given per ratio of "number of source X"/"total number of gpp sources"
For starting : I appologize for the loooong explanation that's coming
examples (I'll start from your reasonnings) :
Scenario 1) Maximum SAFE Adventurers
For this, we want 100% fail safe chance of Adventurers, therefore zero pollution.
Palace + Tavern + Guild = 5 Adventurer
Philosophical + Pacifist + Palace + 1 Spirit Mana +Guild= +195% (effet of republic?)
5 (195%) = 14.75 Points generated with 100% chance
Scenario 2) Reasonable Chance Adventurers, maximum gpp%
Palace + Tavern + Guild +National Epic = 5 Adventurer + 1 Commander
=> 4 total sources, 3 out of 4 bieng adventurer sources.
National Epic + Philosophical + Pacifist + Palace + 1 Spirit Mana +Guild= +295%(effet of republic?)
6 (+295%) = 23.7 Points generated with 75% chance getting an adventurer.
way better than Scenario 1 :
gpp generation risen 1.6 times 3/4th being adventurers).
you'll get adventurers
1.2 times quicker than in scenario 1 (as a mean)
Scenario 3) Quantity over Quality 1 ; MY Grigori GP Farm
Some swear by this system. take
as many specialist as you can (say : 8), and hope for the best. For simplicity, we'll assume you build the National Epic.
5 (Base) + 1 (1*1National epic) + 24 (3*8specialists) = 5 Adventurer + 25 Others;
=>3 adventurers sources, 12 sources total.
National Epic + Philosophical + Pacifist + Palace + 1 Spirit Mana +Guild = +295%(effet of republic?)
30 (+295%) = 118.6 Points generated with 25% chance
(gpp generation risen by 8 times, 1/4th being adventurers)
you'll get adventurer about 2 times quicker than in Scenario 1 .
Scenario 4) Quantity over Quality 2; wonders
Some swear by this system.
Build as many wonders as you can, and hope for the best. For simplicity, we'll assume you build 2 national wonders (National Epic + Heroic Epic) , and 10 world wonders (each giving 2 GGP apiece); No specialists.
5 (Base) + 2 (Nationals) + 20 (Great Wonders) = 5 Adventurer + 22 Others (3sources adv ;
=>15 sources total ; 3 being adventurer sources
National Epic + Philosophical + Pacifist + Palace + 1 Spirit Mana +Guild= +295%(effet of republic?)
26 (295%) = 106.9 Points generated with 20% chance
7 times more gpp, 1/5th GP being an adventurer.
=>
you'll get adventurer 1,44times quicker than Scenario 1.
Scenario 5) : as Scenario 4 without heroic epic : 5 +1 +20 = 26 ; 14 sources : 102.6gpp ; => adventurers comes 1,5 times quicker)
Conclusions :
you'll notice 2 things :
1) Wonders vs specialists
specialists give 3gpp and 1 source
Great wonders give 2gpp and 1source
national wonders give 1gpp and 1source.
thus, to get adventurers, the higher the ratio gpp/source is the better : more contribution to gpp pool (quicker GP) but less source, less reduction of adventurer ratio.
on the other hand, grigori specials : adv guild, palace...etc are VERY GOOD : 1-2 gpp and 1source : even with few actual gpp contribution the play a disproportionatly huge role in getting more adventurers.
Thus, with a bucket, if you want quantity of quality, you'll try to maximise specialists over wonder in your gp(adventurer) farm.
as a rule :
-specialists accelerate adventurer generation (reduce the adventurer spawning chance but rise the gpp so that adventurers have a chance to come quicker),
-wonders accelerate adventurer generation, but less than specialists (compare effet of 10 wonders versus 8 specialists= specialist has both more gpp and more adventurer chances).
-National wonders (save national epic) reduces adventurer generation. It doesn't show in scenario 4 as you have the national epic (+100%gpp). But you'll notice that 10wonders + national epic do better than 10 wonders +national epic + heroic epic.
So any other wonder giving +1gpp IS NOT TO BE BUILD in your grigori GP farm ! (only the national epic for the +100%gpp rate)
If I do a grigori GP farm (scenarii 3-4), it would have mostly specialists. You
can build wonders in surrounding cities (but mostly not in GP farm), as long as you spread them so those cities do not participate in the GP race.
(In scenario 1 you can't build any wonders in your empire as the cities with wonders will compete with your capital and reduce your ratio of adventurers with almost not qucikening the spawning rate).
In a grigori GP farms some wonders can be interesting :
-national epic (1source for 1gpp.. but +100 gpp growth!! really worth it for a GP farm, !)
-great library : 2 gpp + 1(2) free sage : = 5(8)gpp for 2(3) sources : not as good gpp/source ratio as a specialist but as the specialist is free and do not eat any

, it can be really worthwhile.
-some wonders help to get new specialists slots.... (those slots comes at a cost : only 2gpp/source) so having an advantegeous civic or spreading your specialists around the different kind might be better.
2)I always say "x times quicker" and not "X times as much as"
it is due to the disminished return on gpp (increased costs)
with only 1city gathering gpp :
1st GP is at 100gpp, second is at (100spent) + 200 =300gpp.. third is at (300 already spent) + 300 = 600total, fourth is at : (600) +400 =1000 .
1=100 ; 2=300 ; 3=600 ; 4=1000 ; 5=1500 ; 6 =2100 ; 7=2800: 8=3600 ....etc
so as you'll gather gpp 8 times quicker, you won't really have 8 times more GP (scenario 3).
by the time scenario 1 went from 600 to 1000 (4th GP) you went from 600 (same start) to 600+ 400*8 = 3800 gpp.
so while scenario 1 gains 1 GP, scenario 3 grants you the 4th to 8th GP =
5 more GP : 5times more great people generation than in the first scenario. Between those 5 generated GP, 1 or 2 are adventurers, maybe 0, maybe 3-4.
so when he has his 4adventurers, you'll have 8 total GP, and maybe only your 5th adventurer.
BUT, you'll certainly got your 5 nextGP (4th to 8th)
8times quicker than he will get those 5 next GP !
and it goes down to the same principle : getting X times more gpp does not translate to having X times more GP/adventurers, but getting them X times quicker.
Well, as you know, It is completly scrambled by the ARDOR spell that resets the counter. this way you
might get much much more adventurer using scenario 3 than scenario 1.
I hope all this helps and that the "good" information is not diluted in so many words...
I added an excell table if it is more understandable for you ... good luck.