Your bought one!? Your wife gave you approval?!?
I didn't do much with my setting. Really most important parts are the tires... wider or narrower doesn't really matter.
I use ATM Stock AWD motor for mine and I have some few other motifications as well.
But honestly, to make a fresh stock AWD for drifting, I think for basic you need to change:
1) Motor
2) Kyosho Drift tires
3) Bearings
4) Metal wheel nuts
5) Motor Heat Sink
6) Metal Motor Mount
I think the above should get you started perfectly. Call me and discuss if you want to take mine out for a couple of days!!!