Doublewides in parks?

[Eric F.]

I have a lead on a doublewide in a nice park. The home is a 1996 doublewide and after a few repairs it would cost 18k (about). I have a singlewide rental in this park at $775 and sold a 2/2 for 10k last year. Lot rent is $345. 

How much of a premium do you guys find doublewides sell for? Is 30k financed way too much? What length loans do your buyers seem comfortable with?

I have hardly ever seen doublewides in parks so I am not sure what the market is. 

thanks