DO NOT get the med school apartments!!!!!!! These are horrible! You can live elsewhere for the same amount of money. The building is run down and in a very bad area.
I pay $509/month for a 2-bedroom with washer, dryer and dishwasher. Hot water is paid for, but I pay utilities. My place is about 4 miles from the med school (10 min. outside of rush hour, 15-30 min. during).
I wouldn't worry about the postbac thing -- UofL likes nontraditional students a lot. Unfortunately, there are not all that many out-of-state positions in any given class.