Clarification on taking Calculus subjects as prerequisites for Economics classes?
I believe it depends on the Microeconomics class you take. Some Micro classes are calculus heavy but primarily at the upper division level, intro Micro classes generally are not, the equivalent to Econ 100 (versus Intro Econ/Econ 001) I took in school was Calculus heavy, but it involved methods you wouldn't learn in a standard Calculus I or Calculus II (presumably) e.g. Lagrange multipliers.  

Swallowing my pride, I also took a Calculus II equivalent for "non-science" majors, this class introduced Lagrange Multipliers,  while the "science" track wasn't introduced to the method until multivariate calculus. 

so my advice would be to talk to an advisor and or faculty to see if one of the classes is better suited to what you will be studying, as far as Econometrics goes, someone else will need to take that one.