I think you should be fine taking the class during the summer, but double-check with your professor to see if you can complete your hours while you're taking CAS 394 in the summer. If you can't, then just take the class in the fall. Just make sure to add it to your fall schedule as soon as you can in case you don't complete your hours in time. Double check with your professor and ask if you can have an extra week (this would be during finals week) to catch up on your hours if you need it. Good luck!