I second what Phantom said. Parts will add up quickly. I just dropped another $500 on my car the other day and I haven't even pulled the inline 6 yet. I will soon. I've got all my major parts together except the JTR kit, headers, and 2 new front struts.
If I were you I would look for a complete car, and learn from there. If it's not set up the way you like or does'nt run the way you want it to fix it. I feel this would be the most effective method for learning how to work on cars. That is basically how I did it. Just be patient 5K is a good deal of cash and I'm sure a car will come along eventually. You may have to travel out of town to get it but take your time, check it out ask questions here and you'll do fine.
OR
Jump in the deep end and wind up selling the project before it's complete. Tossing your 5+K away to the low bidder. I failed to ask, do you have tools or access to them? You'll need quite a few. That is one reason my build has taken so long, collecting tool to do the job right.
Which ever you decide have fun with it and good luck.
David