Current market value is between $9k-$10k per acre, so $540,000 to $600,000.My big question is I don't fully understand if/how I can use that equity effectively to help out with other BRRRR properties. 

I will list his known assets at the bottom.Here are my two questions: If the documents I sign show him as personally guaranteeing the loan (specific language below).

QUESTION: Is it worth posting for rent right now?

No question, rental real estate is the best investment provided you assess the risks and make it work for you.

I'm not sure I understand your question.

If you have any questions about properties in the Daytona area, I'm more than happy to help.

This is the primary reason we don't have even more business than we do, interest rates are too high.My question is how does one start a lending company, not a brokerage?

I'd recommend you work with an attorney, there are several questions here that would be difficult to resolve in a forum post.

Do some research here in the forums, figure out a strong question to ask, and that will serve you better than just asking anyone to hop on a call.

Happy to answer any questions you might have and share some of my OOS investing experiences.