I agree with these guys, too. Y-pipe, Brake upgrade, Maintenance. If you are getting cams, you will be doing cam seals, too. Since you will be basically doing a complete top and front 60k if you do cams, decide soon if you are. Since you are talking about turbos, do some research on cam selection for a turbo setup that will still work well N/A. This way you can do the cams, the 60k's and the tweecer right away.
On the other hand,
With a turbo, you don't have to worry as much about induction. Big bore butterflys, cams, porting and polishing heads and intake provide more "horsepower per dollar" on a N/A setup.
I think if the plan is to turbo the car, then I would be saving my money for that and not worrying too much about cams.
In the meantime, a y-pipe (which you can always sell when you turbo it), a maf sensor (which can be used when you turbo it), and a twEECer (which will be NEEDED when you turbo it) will provide you with plenty of fun while you collect turbo parts, get used to the car, tuning, perform maintenance, and upgrade whatever suspension/brake parts you want.