Many people apply for loan and bussary very late (later than June 30th). They just have to wait till Oct. or Nov. to get their loan. Before you get your loan, you can ask the school to postpone your tuition deadline.
However, i am not sure whether you are eligible for subsidy for the fall term, given the fact that you are becoming a quebec resident only after the semester starts. You'd better check with the Financial Aid Office at your school.
1, registration, take course
2, apply for l/b
3, apply for deferral of tuition fee(ask the student aids office how to do it)
4, when your application is being processed, you are already quebec resident. you will get the l/b and tuition fee for quebec student.
5,