You need at least 12 credits per semester to keep your financial aid.
Some universities in Florida have this exact design - you start in the summer, have a Fall off, return for Spring and summer, etc. It only works for some majors and not all classes are available. Any major that requires a sequence (especially Stem and the firs 2 years for a Foreign Language major) will be tricky.
HOw many hours a week are you working?