You don't have to go into debt to get a mortgage. Go to daveramsey.com and click on their link for endorsed local providers.. you'll find a local mortage broker who will not squeeze every penny out of you and give you real advice. You don't need a credit score to get a mortgage with normal interest rates.. just a record of on-time payments for rent (I think about 2 years is the norm) and with no debt your DTI (debt to Income) ratio will be excellent.
Please don't go into debt. I have been there and despite a 6 figure income still couldn't keep up. After some hard work I paid it all off and now don't owe anyone a thing except the mortagage (which I'm working on). Everything I earn remains mine and does not go to pay for another banks skyscraper. Who do you think pays for the marble in those places.
Sorry to be so resolute but if someone had told me this when I was in your postion I would have saved myself many sleepless nights and untold $1000's
There is no such thing as credit... .it's all just debt and you're lining someone elses pockets with money that could go to pay for your kids education, healthcare even the food in their mouths.
Good luck.