You can do it. But.... the short summer classes never seem to go as in depth as the longer ones. Now yes you can complete classes very fast if all you worry about is a good grade and passing. But I wouldn't do that with science.
example:
I had 18 credits in April 2017, I have completed 91 credits in the last 8 months and by mid January will have done the remaining 12 credits for a BA in Psych from a NJ state school. I maintained a 3.9 GPA too... But I just wanted the degree fast so I could move on fast. While most of the psych stuff I retained, the general stuff... not so much. my one B was in English 2 where I got a B+ because I took way to many writing intense classes at once (Capstone, Upper Level Ethics in Social Science, Upper level History and Systems of Psych, and English 2) I was basically having to write about 20 pages a week sometimes more. English 2 suffered more than the others because it was Literature based writing and I couldn't read all of each book.
So doable yes, but retention is going to be a problem. Why not take another year... why rush the important stuff...