If you can wait to book travel until after registration, so sometime in June, that might work well. If your kid doesn’t end up with class on Friday afternoons, then there you go. And cutting class is always an option and a personal choice. 
Finals are trickier-my son has travel for a summer course within a day of finishing finals, and the test can’t be moved, so we just have to roll with it and man up! Schedules can vary ALOT for finals from student to student, some finish a few days into the exam period, and others on the last day, last time slot.