Just a tip: Really, you can get through college with your RT unless you're studying graphics, or CAD, or Statistics or something, so need desktop software like Photoshop, AutoCAD or Minitab. And even if you do need desktop apps, you've already got a laptop.
Your RT already has Office on it, it's lighter and has better battery life than a Pro, and you already have one (plus a Type Cover 2 on the way).
Surface Pros are cool, but you know what's cooler than a Surface Pro? A car.
If I were your age again, instead of spending all my money on gadgets that I didn't really need, which I quickly got bored of, I'd save up for driving lessons and a car, not a Sony MZ-R50
Minidisc Player (yes, I'm THAT old). If you start saving now, then by your 17th birthday in exactly a year's time you should have enough to get you up and running.
In fact, I'd probably try and get some kind of part-time apprenticeship at a garage (with absolutely no intention of becoming a mechanic), because it would have yielded a lifetime of useful skills which would have saved me thousands - my last car bill was over ?1100 (
not even exaggerating). The one before that was about ?800. The one before that was just over ?1000. A lot of that stuff I'd have been able to do myself if I'd spent less time trying to overclock my Pentium 75mhz and more time learning which end of a spanner is which.
Why? People like people with cars. Merely having a car will get you invited to more parties (largely because you'll be able to give people without cars - which will be most people around your age - lifts, but the point is: more parties!) More parties means meeting more people, and meeting more people increases your chances of finding one who might like to get naked with you. This should be your number one priority for at least the next 5 years or so.
Moral of the story: Surface Pros are not important in the grand scheme of things. For now - if I were you, I'd focus on getting a car so you can be everywhere and bang everything!
I know you're not going to listen - I wouldn't have listened to me either. But in about 10-12 years time, when you're sitting there sorting through a box of old gadgets and your car's at the garage being fixed, and you've settled with a partner that deep down you know you could have done a bit better if only you'd tried out a few more, you'll remember this thread and think, "aw man, that dude was actually talking some sense."