Everyone gave you some really good advise. My advise is to be careful with single wide purchases, I found out recently that it is nearly impossible to find financing on single wides. Double check how may tags where issued, anything over two you should be able to find many types of financing.
Also, find one that is on a permanent foundation, otherwise, the financing will be difficult.
Please let me know if I can be of any assistance to you.
Due to current market conditions rates are typically higher and manufactured homes. It really depends on the lender. I can recommend a lender for your area or you can shop around with a few banks who specialize in that type of property. Currently Wells Fargo has a loan program for Manufactured homes.