What voltage are you running? I also have an RC8T, FT kit and I'm running the RC-Monster full chassis conversion. MMM/ Tekno Neu 2.5D 5s lipo. Here is my Eagle tree graph.
RC-Monster RC8T 1515 2.5D/MMM/5s RC-M 4500mah
SC10 MMPro 13.5T 2s NeuEnery 5000mah
RC18T Mamba 25/5400kv 2s lipo + 6s NiMh