first things first...how much money would you be making on the farm vs. how much would you be making at the warehouse? I saw the warehouse was 8/hr...how many hours?
Are your living accommodations taken care of on the farm, or do you have to fork out cash for rent/food/etc? If you're making more money on the farm, but have to spend a bunch of it on a hotel/room and food while you're there, then it's definitely not worth it. However, if it's all taken care of for you, and you have the opportunity to pocket a shitload more money, then I'd jump at the opportunity.