is it ever too late to submit a fafsa?
-usually states have different deadlines. for example, the california deadline is on march 2nd but I turned my fafsa in on february 2nd because other states have an earlier deadline.
adding schools?
-i think they will let you change the list of schools when you correct it for information. at worst, you'll have to pay a little or call them up, but i think you could just change your stuff. when i was applying for undergrad, i didnt put my current institution in my 5. but when my school called and asked if they were in the 5, i said yes and changed the order.
waitlisted?
-yes you can. i have not had any acceptances or been waitlisted anywhere but i made one. just write down where you were waitlisted in your 5 schools. for me, i put down where i could possibly be accepted.
hope that helped!
--Quacky