Well, with 10k by that point I'm sure you'll be able to get an 04 and do some work on it. Also, you have plenty of time to read about everything. I'd take some time and look over a lot of the stickies posted here. If you google Unabomber's Manifesto, there is some great info too. You have to really read about upgrades for these cars before hand it seems. Very touchy if not done properly, and normally need tuned for any engine power increases.
I'd say wait and see what comes up in the market before you make any decisions. It is pretty hard to get used ones in good condition, and you might be shopping for a while to find one just a heads up. If you buy used, know what to look for and when to turn and run from the deal.
Welcome to the forum. Just spend some time reading, this is a great place to start learning.