Multiple "hard" classes in the summer

I know it seems too early but…

For next summer I am thinking about taking both Anatomy & Physiology 2A and English 1A during the 5 week summer session for my college. A&P is six hours long and English is three hours long. Do you guys think this is a good idea? I’m also considering taking a History, Communications, Pre Calculus, or Statistics class instead of English. What do you think will be a good alternative to the English class? They’re both on the same days: M-Th. I need to take both classes to stay on track with my academic plans. Has anyone done this before? Was it durable? How much time at home should I expect studying for EACH class?

Thank you.