Have you looked into the USDA Graduate school?
http://grad.usda.gov/course_details.php?cid=ECON1310E
http://grad.usda.gov/course_details.php?cid=ECON1311E
Check out Craigslist--you will have no problem finding a temporary, most likely furnished arrangement from Sept-Jan. There are always students studying abroad that need someone to sublet. However, if you need to move alot of personal belongings and furniture in Sept--then it might be a better bet to sign a year lease and have someone sublet your place while you are gone. Either way--you shouldn't have a problem!
I also just want to reiterate what a lot of people have already said-you CAN get into a great school with the scores you have already achieved. So don't put to much pressure on yourself!! Schools really do consider Work experience, Grades, LOR's and your statement...I am living proof--my quant score barely broke 600. So relax and just keep reviewing your study guides--you'll be fine!!