Make it a nicer property.Your only other option is to hope you're wrong about it being overpriced and wait for a buyer to come along. 

-Costs of street development and utility extensions (public water and septic)-Approval process for subdividing, what should I make contract contingent on to protect myself (approvals, soil tests, stormwater etc)-Is there a form of financing people generally use?

Those websites are notorious for being wrong on rent calculations .

Can't go wrong with Orlando for STR's close to Disney.

There could be many things wrong here.

Nothing wrong with finding one now but your time is better spend looking for contractors. 

Yes, the owner could have "translated" the document verbally to the tenants and had them sign, but that sounds wrong.

I know college kids can do some damage if you rent to the wrong ones.

Does anyone think Im going about this in the wrong way? 

Unfortunately, sometimes it takes having to have something go wrong to know you need to add it to the “walk tenant thru how to do this” list.