You don’t need S&H credit. The 2 required Econ classes cover it. You register for 2nd semester later. I think it’s around October-November. It’s ideal to have accounting 1st 8 weeks in my opinion, but not a huge deal if it’s 2nd.
Personally, I would just take the regular versions of Econ and Finite. Finite tests are graded on a curve, so it actually benefits you to be in a class with dumber people. I think Econ might work the same way, and I know for a fact that your grade is mostly exam-based in those 2 classes. C106 and K204 are more project based, with significant group work, so having better students in the class clearly helps there. I think it might hurt you in Econ, and almost certainly would in Finite. Obviously it’s your call though.
The schedule you have above looks good to me. I would try to avoid Self for Econ if possible. As long as you go to class and put forth effort, you’ll likely be near the top of the grade distribution for most classes. A big reason why grades suck in regular Finite and Econ is that they are large lectures that don’t take attendance and people just don’t go to class. My finite class of 250 had 100-150 people in class on a typical day. On the last class before the final (the professor was reviewing for the final) it was less than 50