@Bebekija
I have mentioned a T45 Worker in the capital on a couple of occasions. See
here and
here. I was not initially certain that this was the best way to go, but I am now 90% sure that it is. The build order occurred to me after I had penned the initial PPP plan, which, as you know, was based upon two minor incorrect assumptions (the Quarry was behind schedule, the Mine ahead).
All of these tests have been a learning experience and I do not mind whose plan we follow, provided it be thought best for the team. I have also found this testing quite tiring, but it has left us both in a much better position to judge what works and what does not. I think we are the only two players who fully understand the current micro at this point.

(Not a jab at anyone! RL is always more important than Civ, and there will no doubt be later turns where I'm very much out of the loop).
Re. City #4, I think we were arguing at cross purposes. My fundamental points were that (a) there was no reason to delay in terms of research; (b) the city's borders would pop on T42 in either plan; (c) working a mined BH saved a Forest and four Worker turns. We have gained hammers and flexibility, so I am now trying to put those saved Worker turns to better use.
If you would like Worker 6 to travel to the Pigs, this can be achieved on T50 with my current plan (this delays the Granary in City #5). In fact, if Mansa were to tech IW next turn, I would suggest that Worker 4 road over the Stone completely (maybe... again, one of us would need to figure out the precise micro).
Rather than discuss at length, here is a revised PPP. Worker numbers might be off from the original PPP, but they're fairly self-explanatory:
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T38
Axe 1. Move 1NW.
Worker 1.
Move 1N and road (1/2).
Worker 2. Move 1N2W.
Worker 3. Move 1NE.
Worker 4. Move 1S. Road and cancel (1/2).
Warrior 2 fortify
PlastDukeberg. Whip Settler.
T39
Settler 4. Move 1N of Nana Hill.
Worker 1. Road (2/2).
Worker 2. Chop (1/3).
Worker 3. Move to Nana Hill
Axe...heads in a N, NW direction sticking to Forests/Jungle.
Galley 1. Move 2S.
Worker 4. Move onto Galley
PlastDukeberg. Work Pig and Banana. Overflow to Archer.
T40
Settler 4. Move 1W. Found city. Work Nana Hill. Build Monument.
Worker 1. Move to Nana Hill and Mine (1/4)
Worker 2. Chop (2/3).
Worker 3. Mine (2/4)
Galley 1. Move 2N1W.
Worker 4. Unload 1NE of capital (grassland)
Archer 1. Move 1S (if healed)
PlastDukeberg. Switch Farmed Banana to Lake.
T41
PlastDukeberg. Switch Lake to farmed Banana.
PlastDukeberg. Build Research (Pig/GH/Banana).
Archer 2. Move 1NE.
Archer 1. Move 1S.
Worker 1. Mine (3/4).
Worker 2. Chop (3/3).
Worker 3. Mine (4/4).
Worker 4. Move 1NW. Road and cancel.
Science Slider. 100%.
T42
Worker 2. Move 1SE. Farm (1/5).
Worker 1. Move 1W. Farm (2/5).
Worker 3. Move 1W. Farm (3/5).
Worker 4. Move 1NW. Road and cancel.
Archer 1. Move 1S. Fortify.
Galley 1. Move 1E.
PlastDukeberg. Switch farmed Banana to Lake. Build Worker.
T43
Stone Island. Build Research.
Pyramid City. Build Research. Work Rice.
Archer 2. Move 1N.
Galley 1. Move 2S.
Worker 5. Move 1S. Road (2/2).
Worker 1-2. Farm Rice (5/5).
Worker 3. Move 2N1E.
T44
Archer 2. Move 1NE.
Worker 5. Move onto Galley.
Worker 1. Move 2S1W.
Worker 2. Move 2S. Road (1/2).
Worker 3. Mine (1/4).
Worker 4. Move 1NE. Road (1/2) and cancel.
Galley 1. Move 1NW.
T45
Archer 2. Move 1E.
Worker 5. Unload onto Grassland Forest (1E of capital).
Worker 1. Road (1/2).
Worker 2. Road (2/2).
Worker 3. Mine (2/4).
Worker 4. Move 1SW. Road (2/2).
PlastDukeberg. 27/60H. Whip Worker. Work Pig/Lake.
Bronze Beaver. Switch to Granary.
T46
PlastDukeberg. Build Research. Work Pig/Lake.
Worker 5. Chop (1/3).
Worker 6. Move 1SE. Chop (1/3).
Worker 1. Road (2/2).
Worker 2. Move 1NW.
Worker 3. Mine (3/4).
Worker 4. Move 1SE. Road (2/2).
Archer 2. Move 1NE.
T47
Bronze Beaver. Whip Granary. Immediately switch to Research.
Worker 1. Move 4N.
Worker 2. Chop (1/3).
Worker 3. Mine (4/4).
Worker 4. Move 2N. Road (2/2).
Worker 5. Chop (2/3).
Worker 6. Chop (2/3).
Pyramid City. Work Banana Hill and Grassland Hill.
Science at 70%.
T48
Mathematics. Science at 0%.
PlastDukeberg. Switch to Settler. Work Pigs, Grassland Hill.
Pyramid City. Work Rice, Banana Hill. Switch to Pyramids.
Bronze Beaver. Switch to Granary.
Stone Island. Switch to Work Boat.
Worker 1. Chop (1/3).
Worker 2. Chop (2/3).
Worker 3. Move 1SE. Road (1/2).
Worker 4. Move 3N1E.
Worker 5. Chop (3/3).
Worker 6. Chop (3/3).
T49
PlastDukeberg. Switch to Settler.
Bronze Beaver. Switch to Worker.
Worker 5. Move 1N. Road (1/2).
Worker 6. Move 2N. Road (2/2).
Settler 5. Move 4N.
Worker 4. Road Ivory (1/2) and cancel.
Worker 3. Road (2/2).
(Note: I need to check all of the above, but I think it's all good.)
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T47, Mathematics coming in:
T50. I stop here, partly because things get very flexible at this point, but also because I need to be somewhere right now:
The Ivory has one turn of road already built. Of the two Workers south of Elephant Bling, one could feasibly go towards Bronze Beaver. The Worker 2E of Pyramid City can do a number of things (move to the Ivory and improve this turn; move to a Forest in Pyramid City or Elephant Bling, to chop next turn; move to the Gems, to road next turn).
My description of unit movement is a little fuzzy. Look at the screenshot for relative positions of the Axe, Archers, and Warrior.
I have more to add, but like I said I need to be elsewhere right now, my apologies. Saves attached.
Incidentally, I think I work between 60-70 hours a week, albeit on my own terms.

My free time last week was a rare luxury.