Regarding the Archers: "Healfdene" already spawned a leader, so it won't spawn another one: it's already "elite*". This one can safely be upgraded. The other one: maybe keep him around in Kufah fo a while for the case that another Arabian unit shows up there and we can try for another leader. But upgrading him as well would also be ok.
Much more important: Birka still hasn't gotten any irrigations?! As I already said earlier: let Yekaterinburg grow to 5 (e.g. by rushing a Galley when it hits 5 (which is now), so it can smoothly go back to worker-spawning). Then Yekaterinburg can replace the irrigated BG and mined plains with two mined grasslands (for the same 5 good and 5 shields), and Birka can have the irrigated BG!
Otherwise the game will be over, before Birka grows to size 7...
(BTW: Birka can now start its Market.)
Regarding happiness: yes, increase the lux slider to 20% for now, don't let our precious citizens starve. And then do the following:
So if I counted correctly, in 4 turns from now we'll have silks connected and can reduce the lux slider back to 10%. (If I remember correctly, the Russians had silks on sale in the past, so there is probably already a road on that tile. You can check next turn when the units enter the forest. If not, bring two workers and protect them with the Knight and Spear.)
Much more important: Birka still hasn't gotten any irrigations?! As I already said earlier: let Yekaterinburg grow to 5 (e.g. by rushing a Galley when it hits 5 (which is now), so it can smoothly go back to worker-spawning). Then Yekaterinburg can replace the irrigated BG and mined plains with two mined grasslands (for the same 5 good and 5 shields), and Birka can have the irrigated BG!
Otherwise the game will be over, before Birka grows to size 7...

(BTW: Birka can now start its Market.)
Spoiler Spoiler :
Hit the "Insert" button and then you can choose "Spoiler" from the drop-down menu...
Regarding happiness: yes, increase the lux slider to 20% for now, don't let our precious citizens starve. And then do the following:
- Switch Yaroslavl to Settler and rush it.
- Turn the one citizen in Yaroslavl to a taxman.
- Interturn the game will ask you, whether you want to delay the Settler or abandon Yaroslavl. Choose "Abandon Yaroslavl"
- Move the Settler, the Horse from Molde, the Spearman and the three units at Utrecht onto the forest square as indicated. That should be more than plenty to defend that town and at the same time it can serve as an assembly point for the attack on Moscow: wait till the Horses have healed and 2-3 more have arrived there, and you can march on and take Moscow. The 7 units at Novgorod are sufficient to take that town. Just move them into the jungle, before you attack: otherwise you'll get the malus for attacking across the river!
So if I counted correctly, in 4 turns from now we'll have silks connected and can reduce the lux slider back to 10%. (If I remember correctly, the Russians had silks on sale in the past, so there is probably already a road on that tile. You can check next turn when the units enter the forest. If not, bring two workers and protect them with the Knight and Spear.)