Do i have this rite, mmm 2200 and lipo choice

[Sammus]

120a rating doesn't mean the motor peaks at 120a, it's a rating of what it can handle. you could make the motor draw a hell of a lot more than that if you tried :p

Also, gearing for a particular speed in a known truck tends to indicate the power requirements will be pretty similar, so a lot of people here gear for a particular speed.