One_shot- Great system! When I was your age(which was only 4 years and change ago) my system was so disorganized, I didn't put much thought into component purchases. It seems you are planning your moves wisely and it will make upgrading much easier and your system more enjoyable along the way. Listen to what the people here at audiogon have to say and you'll get the system of your dreams with minimal $$$$. I only wish I knew about audiogon when I was 17/18 years old, I would have saved a lot of money(and as you know at that age, that is a BIG deal).
Enjoy the tunes!