Real Estate Backed Loan?

Hi all. This isn't an ETA post, but thought the SF community could be helpful. I'm seeking an alternative to bank financing. Ideally, something like a LOC that would be collateralized by farmland with a max LTV of <25%. The land is being prepped for sale, so the repayment period will end up being <18 months. The land is held in trust, and ideally the trust would be the sole guarantor. The land was recently appraised <$5M. I've had a few issues with traditional banks including not lending on farmland and/or needing additional guarantors. Any advice or connections would be much appreciated. Thanks in advance!