Your best bet would be to speak with a good lender who can take a critical look at your combined financial situation.
I'd be happy to refer you to someone here locally that can help.
Keller Williams Realty
713-777-9996 EXT 103
Not enough information to make a call. Credit score needs to be 640+ in most cases, maybe 620. Then you get into "why" is the score low? Missed payments, late payments, judgements & bankruptcy to name a few are killers. Self employed without 2 years of adequate and proven income won't work either.
Your best bet would be to work on fixing the bad credit. It's easier than you might think. I"d be happy to work through it with you as your Realtor.
Joe Jarusinsky, Realtor/Master Instructor, Keller Williams Realty, Austin's #1 Real Estate Company, Ranked #1 by Buyers and Sellers (JD Power & Assoc. 2012) Call 512-261-4415