I didn't realize you were an incoming freshman, so I was assuming you could base it off of how much time you had free last semester. In that case I'd recommend waiting a semester before starting work and/or piling on everything else, simply because your college experience will be of an unknown difficulty compared to your high school experience. I didn't get fully involved in everything I am now until second semester, and I thought it made the transition easier. In any case, just be careful if you go all out from the start, because you don't want to engage in major commitments that you'd feel bad about dropping should you realize you need more time for studying or whatever. You may end up having plenty of time to do everything you want, or barely enough to time to juggle a couple things, but either way, I'd rather have the freedom to adjust.