TraderGreq,
First of all, best luck in your endeavor, it's always great to see somebody young, ambitious and determined.
FWIW, I suggest you consider the following (not that you do it, but that you think about it and see if you might want to make some adjustments to your plan):
1) This summer, forget mostly about trading, get a job (or two) and while you're staying at your parents (I guess you are) save as much as you can. 1,500 is nothing, you don't need a hundred grand to start trading, but simply saving another 1,500 quadruples (not doubles, mind you) your chances of staying in the game (read Van Tharp or somebody else on the risk of ruin and position sizing). If you can save some significant amount (say 10,000) then put half in your trading account and the other half in a savings account (in case you blow up your first account - it's happened to the very best).
Working and saving instead of studying and trading might sound shitty now, but it is way much better than having to start saving again in your sophomore year when you have only 300 left in your trading account (not that this will happen to you, but that you want to be prepared in case it does happen to you - again, it's happened to the best, if you don't believe me ask Livermore's ghost).
2) Make a 3 year curriculum/syllabus for your trading starting from the general (going a mile wide at the beginning was really smart) education and then proceed to go deeper and deeper in the fields you like the best, while covering the bases in the rest. Keep open spaces for things you don't think you need to learn now and for things you don't even think you are supposed to know. Combine theory, testing, paper money practice and real trading.
3) As soon as you can, get an internship in a trading firm either part time during the school year or in the summers. Don't take no for an answer. Know thy enemy.
4) Try taking a few extra credits every semester and the odd course over the summer so that your senior year is so light on courses that you can basically trade full time (that one year will be way more valuable than putting a few trades in and out between classes for 4 years).
5) Make sure you take a couple of vacations every year and never miss an important college event for a trade: there will always be more trades, booms and crashes, but some of the experiences and opportunities you will get in college will be once-in-a-lifetime (or so) experiences. Not trading a few days a term will delay your way to becoming a millionaire a month or so, but you'll be way richer.
6) Use a trading simulator where you can record and replay the trading sessions (at x2, x4, etc if you want to) so you don't have time gaps in your accumulated experience due to your schedule.
7) Don't worry about whether you end up college (or, if you follow number 4, your junior year) with 70,000, 700,000 or 7,000, just make sure you trade (and live) well and con-sis-tent-ly.
Last but not least, write down the names of those who've given you some advice and when you're filthy rich write us a check.

lol - just kidding.
All the best - man, do I envy you!