I think we're just dealing with someone who's new to the hobby, has his sights set on a jet, and will benefit from some direction.

F-18, As others have said, finding an instructor and a trainer are the first step. After you are flying the trainer well you will move to a faster, more nimble plane. After this you will move to something that's even faster and more nimble. While you are making these steps you will be learning the building, safety, and flying skills that you need before you even think about jets. I got the feeling from your other thread you were thinking months, but for most of us, this progression would actually take multiple years, or even a lifetime.

Personally, if I were in your situation, my $ priorities would be 1) College fund 2) Transportation, and 3) A realistic amount of money on hobbies such as R/C flying. Start slow, build your skills, and have fun with some less expensive planes. Note, there are lots of REALLY fast prop planes out there that cost nowhere near what you'll pay for a turbine based jet. Once you've gotten through college and have settled into a job, your R/C skills and finances will be at a point where you can take another look at jets. As a bonus, there will be lots of great new stuff out there, and it'll probably cost less than it does now.