What would your other option be? If you move out there and don't land a job before the school year starts, what else would you do? You could do a blog called "Phabi's Year @ WalMart" but I would think that if it is temporary and you have some money set aside if you hit a bad run and aren't bringing in the totals you would like, then go for it.
Clean up in aisle 10....and bring a mop!