Brushless system suggestions.
I recently got a TC4 in a trade. I'm converting it to brushless mainly for speed runs. I'm looking at three different systems to install and would like some opinions. Caslte SV3 w/ 7700kv 4 pole 2s capable. Viciuos Pirahna w/ 6200kv 2 pole 2s cabale. Hobbywing clone 120a w/ 5.5t 6000kv sensored 2 pole 3s capable.. These 3 fit into my budget. Not sure if the Hobbywing esc will even fit into the car. The other 2 are a toss up just with kv. 3s would be better for speed, but tight fit (and I don't have a 3s battery yet either).
What do you guys think would be a better choice?