@kingsta It’s definitely not necessary to take any of the classes at a community college, but the best ones to take would be finite, calc, or W131. Of those 3, I have only taken finite on campus at IU (Calc through ACP and exempted from W131).
If you are strong in math, you should be fine taking the math classes at IU, but the class averages are pretty bad. I have heard that W131 can be difficult, but it looks like there is a decent amount of variability between professors in grades. If you get a good one/are a good writer, you’d probably be fine taking it at IU as well. Also, don’t take micro econ with Self.