Trying to find a lender for a challenging property

[Joe Bourguignon]

Ok, so I've been working on acquiring this property for a while and I'm finally to the point of needing a lender. The challenge is that the property is over 20 acres, which rules out lots of conventional lenders, AND there are two residences on the property, which seems to rule out most other non-portfolio lenders. I'm talking to a couple farm style banks in Oregon where the property is, but they're moving way too slow for what the seller wants to happen, and I don't want to lose this property just because I couldn't get a mortgage in time! So, where should I look to find a lender on this property? Thanks!! -Joe