Our cities will be connected through coast in 11 turns (or 12 with slavery) so I wouldn't bother roading between them. I think it's more beneficial to chop a granary in 2nd city (prechop/mine grassland hill). Then it should finish in time on size 2.
In short I like revolting to slavery, roading the copper, chopping an axeman, chopping granary for 2nd city.
If we stop fogbusting we can try to give the axeman 10XP and unlocking the HE. Should be doable as it's out so early. Depends on the size of the island.