This sounds to me like a “don’t fix it if it ain’t broken” situation. You’re happy, school is going great, your friends and family are awesome, and you sound like you enjoy training and racing on your own. Since it is a close call for you, I suggest continuing to do what you’re doing instead of risking a situation that doesn’t work well for you. Dorm life sucks. It is only slightly better than prison. Happiness is all that really matters, and you have that right now. Good luck whatever you decide!