[RyanCahoon]

It sounds like you had a fantastic mentor on your FIRST team. In addition to the great suggestions already given for ways to challenge yourself, I would suggest finding a mentor at your university. I would suggest a grad student or post doc as they're usually not as busy as professors, but seek out professors if you can't find a grad student that you respect.

It's great to get advice from online forums, but developing a longterm relationship with a mentor will give you someone who knows your position and progress and can give more specific suggestions what to pursue next. They'll also be a excellent letter of recommendation when you apply for grad school or a job.