Bashing

so this is how my truck will be,

supermaxx 8 spider diffs
flm bulkless
flm arms
integy knuckles
mip cvds
supermaxx centre dog bones
flm chassis
aluminum shock tower
msr5 piggyback shocks
vertigo aluminum skid plates
dace adapters

this guy i know ( i sold him my savage) I told him i was getting the dace adapters and then he was telling me that i wouldnt need them and if i did have enough torque to strip a hex then my drive train would break and its gonna be so heavy with all the aluminum that i would need ALOT of torque to get it up and moving. So i just told him i'll bet him $50 I can smoke his savage in a 40m drag race, when i finish building my e-maxx, his savage has the stock s-25 engine. so what brushless set up should i get? 8xl/9920? i've got 7cell packs but i'll probably rebuild them and make them 8 cell packs. i'll probably get the brushless set up around xmas time if i find a job in time lol.

Thanks for the help