SH Z-Car ZMXB-8 1/8 Buggy - Perfect for conversion?

[Trike]

So I'm getting my list of stuff to get. here's what I have so far.

Electric motor mount - LRP SX8-BX, SH Z-Car
5mm bore, mod1 pinion (15t)
MedUsa Products V2 36-60 Afterburner Motor (36-60-1600)
Castle Creations Mamba Monster controller V3
Battery Tray Kit (45mmx168mm) (Going to use the 145x45x39mm 6s packs from hobbycity)
RC-Monster Brushless Heatsink/clamp (L size)

Is the mod1 pinion ok? or do I need the .8 pinion? Do I really need a heatsink for the motor? The price tag is definitely getting up there, but i'm expecting one bad A buggy. Hopefully reliable and durable. :P


Any comments or suggestions?

Thanks