[B-Minus]

Hey guys I have things I like to do such as skateboarding, guitar, reading, gaming and coding, and thus want to get good at these activities and lose track of time when doing them. I also have things that I want to do just to be well rounded but don't enjoy like a hobby such as learning Spanish and working out. How many of these hobbies would it be sustainable to keep while working part time and doing school full time(for Computer Science so that's when I code), so that I can improve at them. If I keep all these activities and try to do them all every week, I will make negligible progress in each one. I would rather have one or two and get good at them. Any advice would be great.