Exceeding DTI - Lender "at capacity" options

[Clay White]

Hey y'all. 

I completed my first BRRRR on a SFR a few months ago. Was able to pickup a duplex as well under the same criteria, and currently have two more SF BRRRR's ready to close and ready to rehab. I received a conventional loan for the duplex, have one of the two SFR for cash, and the last from the refinance from the first BRRRR. My lender let me know that I'm exceeding my Debt to Income and they wouldn't want to loan out anymore without a significant increase in income. My question is, if the right deal came along, I would certainty want to throw my hat in the ring, but with the lack of traditional financing or BP lenders (rural midwestern state), what options would I have to continue on?