That's great! Congrats :). I don't see how any of it would affect your riding, other than you may be a little tired at the end of the day. Your schedule might be a little busy, so just make sure to stay on top of homework, which should be the #1 priority. I ride six times a week during school along with practicing two instruments, and homework, so usually end up doing homework on the way out to the barn. I'm looking to find a job to cram even more in my schedule :P. Last year I procrastinated a LOT, and ended up staying up very late to finish everything. So make sure you don't do that, it's no fun and isn't good for your grades. Have fun!