My unpopular 2 cents.
Get a non-turbo 2.5 instead of a wrx.
Reasons? Insurance is cheaper, you can run 87, they're still zippy, you can still go plenty fast and get in trouble in them.
Sure the 2.5NA isn't as fast as a modded 2.0 in a straight line, but you can still make a base impreza turn like nobody's business. I've even chased down some 2.0 wrx's in my day in my "lowly" RS.
In your intro thread you said you were heading to college soon (I may be mistaken or confusing you with someone else). That means you're probably not married, and probably under 25. Insurance on the WRX is pretty nutty. If you're living on campus, your ride is going to be parked most the time anyways, why pay extra. I've you've got gobs of money to throw around, eff it, get a wrx. Or do college in the NA then flip it for a turbo car.
I have no idea what your budget is, but RJB has a bugeye NA for 7k. Head Gasket, timing belt, tires, axles, brakes... all done.
http://www.rjbandson.com/
Evergreen has an 04 NA wagon for 8.5k. They're legit and will take care of you.
http://www.evergreensubaru.com/used/Subaru/2004-Subaru-Impreza-8fdcc7500a0a006501150b686bf478ba.htm
You can find cheaper prices private party, but do you really want to have your daily driver 5k bugeye blow a head gasket and have to deal with that.