I have a 2600 3s lipo in it, running a 2216 1300kv on 30% throttle
In hindsight, I should have put my servos further back like yours, mine are right under the main wing. Although it will be super lightweight if I want to fly it with the 1000. All I have are 1000s and 2200s, so my plane either gets a brick or it gets a 1000 lol. Actually, I bet I can carve out some room if I really wanted to and push a 4500 back in there, but I would end up getting bored before it was time to land.
Actually, after this one, I am going on a build hiatus for a while, going to try and draw up plans for my UAV thingy I am making, and go from there. Then I think I'll rebuild the FT P40 in a STOL configuration with either split flaps or fowler flaps and some bush wheels (who says high wing planes get to have all the fun) and a removable hatch.
I might design a bomb drop for this plane, it has plenty of room for a bomb bay right below the CG.