e-zilla and BL system - ideas and thoughs?

ok whats the cheapest way to get a BL in this bad boy...

It doesnt have to be a total rocket, just like 70mph, thats all....JK.

I dont even know where to start aside the hv-maxx.....which I dont think I want...and the mamba-maxx is to far out :) so what can I do on a budget...

I think ill stick to running twin 6cell stick packs in the stock locations......although I keep thinking I should run like 8-10 and save weight cause there comes a point where Im adding weight for more voltage but i dont know how worth it it is.....either way im not running 1000000 cells so with 12 possibly 14 and or less what do you recommend???

BL NEWB for sure here :)