How easy is it to get a mortgage in another state?

We currently live in MO but want to move to TX in two years. We plan on my spouse getting a job before we move and me after we move.. we don't have the best credit (bankruptcy will be 3 yrs. discharged at that point) but we are working on rebuilding (credit score somewhere in the low 600's, by my guess). We will have no credit card debt and only one car payment. How do you get a loan when you are moving and do they care about not having a job right then or do they go by your past income?