Take it from a guy that has been there -- get the 2LT. If you spend too much you may end up having to sell the car. If you "settle" for the V6, you have only lost some performance. And to be perfectly honest, 300 HP is incredible. And I am not intending to insult you by saying you're only 19, but you are. That money can be applied towards college, books, drinks, dates, and maybe towards buying your first home. Don't put yourself behind the financial eight ball at such a young age.
/end lecture
All that having been said, I well understand the irrational passion of car buying.