Hey llina, as Jonathan stated below an LLC will not determine your interest rates. 

But consumers all are on the site for free where real estate agents are constantly hawked to buy leads or participate in what is now a 35-40% referral business for unvetted leads who think they are contacting the listing agent.Their business model has always been flawed.

However, with high rates, the next mortgage would be very expensive, and a vacancy would be intensely expensive with two mortgages.

I think this depends on your risk tolerance and your interest rate.  

I just can't see any real about us or if there's other points of contacts.

And it's very pertinent to today's environment because it doesn't look like interest rates will be coming down much, if at all this year.

Have you searched your county site to identify those that have bought land in your area the past few years and then contacted them?

If you're looking at a debt service loan, 15% is the minimum for a purchase but it's much more common (and rates are better) at 20-25%. 

Due to current interest rates, many CAP rates are much lower than they should be and usually there is only so much price discount a non-delinquent seller will be able or willing to offer.

Just shoot me a DM and I can share contact info.