[suicideneil]

Hv4.5 = 4800kv
HV4400 = 4400kv
Hv6.5 = 3100kv

I believe using the 6.5 would be an ideal solution to heat issues, since it has a lower kv rating & more torque than the others, so a greater input voltage could be used to generate the rpms, rather than a higher kv motor which draws more current = heat. I will have to wait until I get my new setup in a few months to compare the two systems, but each system has its own merrits.