Is it a bad idea to take Bio II, OchemII, Biochem I , Physics I all at once to take the MCAT?

I'm a non-traditional applicant. I was a chemistry major then I went to to nursing school. I just graduated this May.

I took some of the pre-reqs years ago. I have BioII, Ochem II, Biochem, Physics I&II left. My GPA before nursing is 3.98 and the nursing GPA is 3.78. (both at a state university)

Is it a bad idea to take Bio II, OchemII, Biochem I , Physics I all at once next semester and take the MCAT in May 2017 ?

I was going to give myself 2 years and apply for the 2018 cycle. But now...

Is it a bad idea to take Bio II, OchemII, Biochem I , Physics I all at once to take the MCAT?