Cool review Bruce, those little planes are tough
I fly with mates who have some of the 50mm J-power range of EDF's similar to the skyangel F16 size and most of em use 13-1500 3S and 4S and one of em even uses a 2200 3S
YEEEP in a Sabre, with stock motor and fan and it still flies good! So I guess these things can take the extra weight
Regarding batteries, I have a few 2200 4S 40C Nanotechs and they seem to come down a little cooler than my 2200 4S 30C batts and yes they're both being used within their C rating. Hard to say if it's because they're Nanos or because they're a slightly higher C rating
I did just receive a 40C Turnigy so I'll be able to do a fair comparison then.
Helping the glue industry, one crash at a time.....