Knowing what I know now (having taken all those classes) I wouldn't have paired micro with another science (I took it w. A&P I). Just my opinion, I found it to be challenging, I had so many bacteria, viruses, diseases, treatments, drugs, cultures, identifications etc to learn, memorize and do that It was hard for me to balance.
I think I would've been fine had I not been taking 16 credits of math and science! But I really worked hard and still didn't get an A.
Take my experience with a grain of salt, everyones experience is different, but for me it didn't work out as well as I'd have liked it to!