Grad Visa Rejection - options

Basically Grad Visa was rejected due to insufficient study weeks 88 vs a required 92, utter crap and inconsistency in the field.

There obviously is an option for a AAT appeal however the question is, what can I do while on my bridging visa. Am i able to apply to study another course and have the coe issued and roll over? Or do i need to leave and reapply for uni? Coming from tafe and can I work up until my exit date should I choose to go home. Have 30 days to decide

Thanks.