Budget E-Maxx Setup

[Thunderbruiser]

Well I am looking to buy an e-maxx roller or actually an rtr and then i am looking to throw in existing parts:

I already own a 9l from previous project and then i have a left over quark 80b and would run that on 4s...is this ok? i am gonna take some of the shocks off so that i's lighter and i'd prolly lock the tranny into second...lmk what you guys thinK?