You will most likely be deferred. So you kinda need to A out. Especially with Aps. My son took 6 Aps senior year with Calc 3 and said it was easier then his all honors classes. More interesting due to more depth.
Also see how your school does with Michigan. If instate OK. But much harder if OOS. Ross is great but not the be all for business. If you get in there are tons of non Ross opportunities for business. Many non Ross students go into Business successfully.