You obviously want some speed and don't have a budget. Save your money and get a better car down the road.
Pissing away money on N/A builds just don't pay out like a good turbo build on these boxer engines. Sure you can have a great build for a nominal amount of cash, but get the right engine/turbo and you won't be disappointed.
Also have fun with insurance, you're gonna get creamed. you sound young. YOu're gonna get creamed.
Save your money, learn as much as you can, THEN get a car that will suit you and your needs.
::cough:: ::cough::: nissan ::cough:: ::cough::
I would stick with AWD if and only IF:
A) YOu need it in a colder region of America.
B) You stumbled across a CHEAP wrx or RS and had the experience to build it.
C) Had the cash to really tune the suspension.
This is just me.
2cents. good luck.