Could I please get some advice on my fall schedule?

[merovingian12]

I'm finishing up my freshman year of college and next fall I'm planning to take:

Differential Equations and Dynamical Systems (4 credits)
Analysis I (4)
Waves and Thermal Physics (4)
History of Classical Music (for gen. ed. requirements) (3)

I'm fairly confident about my course selection but I'm not so sure about my "extracurricular" activities. Right now I'm on the rocketry project team (2), doing astronomy research (currently for two credits, and it would stay that way in the fall,) and taking violin lessons. Recently I talked to a professor and got a position at the plasma laboratory starting this fall, which I'm really excited about.

But now I have too much. It would be nice if I could get rid of one or two commitments. However, while I've decided to double major in math and physics, I'm very confused about my interests and am still undecided about my plans beyond my undergrad years. I'm trying to reconcile my interests in pure math, physics (especially astrophysics,) and aerospace engineering, and at this point I could see myself doing any of these in grad school. As for the music lessons, it's something I enjoy and it's a way to take a break from all my STEM activities. So I'm hesitant to drop that as well.

Could someone give me some suggestions on how to make my schedule more manageable while still keeping my options open?

 

[ZombieFeynman]

If I were in this situation, I would drop one research position in addition to possibly dropping rocketry project team. Your schedule is pretty light academically, but better to do excellent research in one area than decent research in two areas.