I agree with Bignerd100 that you should be very careful with volume so the Onkyo doesn't clip badly and fry your speakers.
However, I think you should keep what you have and save your money for activities in college. College is about learning, experiencing things, meeting people and having a good time! But keep up those grades too! Audio equipment can come later. Besides, you could get a good amp and your speakers could still get damaged in a party, or the amp could get stolen, etc, etc.
However, I think you should keep what you have and save your money for activities in college. College is about learning, experiencing things, meeting people and having a good time! But keep up those grades too! Audio equipment can come later. Besides, you could get a good amp and your speakers could still get damaged in a party, or the amp could get stolen, etc, etc.