I don't think you need 6s to go that fast with a TC3... see the link on the TC4 below... a Mamba Max (MM Pro should be even better) and 7700 kv motor will get you there on 4s or less depending on gearing...
From ejepeje:
Brushless TC4
Mamba Max 7700 motor setup
DesirePower 2S+2S 3700mAh 25C LiPo batteries