I think you want to partner with a bank.
(1) Have a good pitch
(2) Reach out. Calm down the butterflies in your stomach and make some cold calls. Connect to a banking executive you find on LinkedIn. Look at trade publications such as American Banker and if you are interested in somebody who gets interviewed give them a call. I own stock in a local bank I respect and I'd try finding an executive or board member at a shareholder meeting, ribbon cutting ceremony, rotary club or some event that they sponsor.
You're unlikely to get a deal out of the first meeting but if you ask a lot of questions you can test the water, refine your pitch (1), get more confident at (2), get more contacts and repeat.
Business development is not easy but I'm certain that there are bankers right now who would be excited to expand their business by finding the right partners.