HV-Maxx 6.5/4.5?

Ill be running 14 IB4200 or 14 GP4300. Which one is better to drive? Will a stock maxx with 3.3 driveshafts handle the power? What kind of runtime geared 12/72. I like the Feigao 540C 8 or 9XL. But i cant find a nice ESC in my buget, maybe a Quark 80B Competition. But thats $290 + a 6v BEC= $330 and the novak would be $280. The novak wouldnt break the axles? Correct? But it is tempting to go with that insane speed and torqe!