HV-Maxx 4.5 or MM and 9xl?

Cant decide what setup? I want somthing that has more runtime and power the the titans. I have 7 cell IB4200 WCE batteries and it makes my truck do about 35 m.p.h. So Im staying with the 2 speed, and something that I wont snap my axles. I not sure If I should go to BL. O and also will I be able to program the esc? Like the threw the USB?




What would I need for this? Im going to get >>

List
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3.3 revo axles and centers
3.3 revo knuckles
3.3 t-maxx 3.3 turnbuckles


I need to get
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FLM diff cups (x2) $60
Integy Aluminum diff case (x2) $50
Hardened steel idler gear-Emaxx transmission $28
Integy Gear Box Collar (x2) $10
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$148 ouch! plus the motor!