Additional thoughts...
Research
Even though the Inca continue to lead us by a couple of techs they are not pulling away that's transparent to us. Would the AI make a dash to MilTrad? We could assume this is a worst case scenario and plan our war accordingly.
[Edit: If the Incas are going for MT then
! They don't have horses.]
Both the Iriquois and Arabs continue to lag us in research and manage to stay dirt poor. As the libraries come on line, coupled with our commercial trait, we'll do just fine.
Territory
The more I look at the map the more please I am with our expansion phase. We have some very nice territory and will own the bulk of this landmass in the next 20-30 turns. In contrast to us are the Inca. They seem to have been blessed with a good portion of swamp, mountains and desert. Maybe they'll find some hobbits treking about.
Military
The Inca are building some pikes but I'm not seeing any MI. They don't have horses!
We have a good mixture of forces and the AC's are a blessing. Congrats to the rest of the team for seeing the value in SoZ.

The one thing we are missing is arty. We'll be at war with the Inca prior to Invention so we should settle for catapults rather than to look and build trebuchets directly. If I had to pay to upgrade any units I would look to upgrade our horses to knights before going warrior to MI. Once Fuedalism is done we'll need pikes (and cats) in the boarder cities to repulse the Inca counter-attack.
The Inca have forces all over our territory that have been barb hunting. It would be nice to jump the Inca now while their troops are divided and far from home but I don't think we are ready. Our forces should start shepparding them out. At the very least we can escort them with a reaction force should they decide to backstab us.
I left the forces rather scattered. Sorry about that one.
Culture
I'm too much of a warmonger to care.
I'll post more random thoughts after some more coffee.