yes, they will be sending out the first wave of waitlist acceptances in the first or second week of june.
don't even bother looking for housing until you hear of an acceptance. there are far better ways to spend the precious limited time you have in life. do something fun. housing will always be around, and why would you look if you can't commit to anything?? even if you dont find your dream rental, go month to month until you do if you have to... relax, take a deep breath, and just keep waiting, there's not much you can do.
lower tier schools are a term used on this forum by people who are qualified to get into big name schools. makes them feel better about themselves. every medical school gets you an MD, some way or another. some are less competitive than others, and for that reason, the snobby elite school matriculants like to see it as a flaw. this trend will continue throughout life, be ready for it in residency, job hunting, and just about everything else.
i havent looked at your profile, but if you have to reapply, apply only to schools you would ACTUALLY go to if accepted, and step back and evaluate where YOU are competitive.