Congrats, that's a good score on a calculus final --people usually do really good with differentiation and then have problems with integration. I think I took those classes around that age too, and can verify that math is a young man's sport indeed. Calculus 3 is just the extension of 1 and 2 into 3 dimensions, but in 4 you'll learn some new stuff like vector fields and such (useful for shooting too). I'd do linear algebra prior to 4, but take 4 before differential equations or introduction to proofs (that's a VERY important math class).
Check this out, I doub't you've seen this yet but you know enough to appreciate it. You can play with this and unwind damn near much of math up to the 17th or 18th century with this, it's simple, beautiful and it includes ALL of the most important numbers: e^(i*pi)+1=0. It's Euler's identity and it comes from Euler's formula, look it up. I wish I'd known it earlier on, because if you understand it well, it's like having a mental cheat sheet.
I think the class I disliked the most was modern algebra. Yeah, definitely modern algebra. Analysis was my favorite, otherwise known as calculus 5-8 (you get two double decker pocket protectors and a pair of limited edition birth control glasses with extra thick plastic lenses complete with scotch tape bridges). Partial differential equations and Fourier analysis was also a lot of fun.
Enjoy school while it lasts, and I hope to god you aren't married right now. If you are, good luck with that, and don't take art or art history classes if you are easily tempted. I managed, but I doubt you're as ugly as I am. Good luck with your classes!
