5700 best for me?

[HummerMan]

As some of you guys may know I've been looking at a BL system for some time now and I think I am ready to make a purchase. Unless you guys reccomend otherwise. The truck is my old Traxxas Rustler, going to drop the Mamba Max 5700 motor/esc combo into her and start off with just some 6-8 cell packs, then later move up to Lipos. I picked up a SuperBrain 989 charger this past Christmas so I am covered in that department. Does anyone happen to know of a good gearing setup for this? Basically I just want this to go fast, really really fast lol. But it HAS to be reliable.... Thanks guys...