I do have a quick comment. I previously worked for a bank that also has a similar program. I want to caution you - if an MLO takes an application and you KNOW it doesn't meet the secondary market requirements (i.e. credit score of 450, DTI of 75%, etc.) and deny this loan - it will be required to be on your HMDA LAR as you made the credit decision.
Of course this could be a moot point if all applications will be going to the investor.
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My Opinions Only