Answers by Dr Andrea Hodge
Stay in the band! I am not sure when you will have another chance to play in a band so you should enjoy playing the oboe. I assume you have good grades already and a good SAT/ACT score. So at this point you should just make sure to keep your grades up.
You can always take more classes later. I am not familiar with GA tech admissions, but I do know that at USC we appreciate a well rounded future engineer. I am sure most schools will also value your broad interests.
Good luck and best wishes,