I Think the amps are fine. I am using the 5S 5300's because I use a pair of them for my F3A 2x2 electric. After each P09 on the Angel I put back about 3400mah, compared to around 3000mah on my 2x2, which incidentally is an Comp ARF Integral on Hacker outrunner A60 20S. 16x10 is fine, 16x12 better pitch speed. In any case its an outstanding F3A model for its size.