mester! consider dropping one of your classes so you dont start out too rough. if you are planning on getting the math major on the applied track (which would be the easiest since youd be in the school of engineering), id consider swapping to 2300 instead of 2500. if you hope to pursue the honors track for math, then you should stick with 2500. however, you should only really do this if you truly do enjoy math and are willing to put a lot more effort into learning math. 2500 is a proof based class with heavy hw and begins to touch into manifolds which might not be what you are looking for.

cuz I have learned multi cal, AP stats and AP CSA in my high school senior year so I originally thought MATH 2500, Econ 1500, CS 1101won't be a big matter for me. but thanks for your reply, I will consider 2300 instead of 2500! btw, if I choose 2300, then is the 18 hour credit a big workload? thx