I'm out of town investor, and I purchase a property in Cleveland, signed contract with a GC i meet on here, who was doing a decent job for some time, and I thought it was an honest guy. 

Tenants don't have to sign anything from the new landlord.You can give them instructions on where to make payments going forward.

@Sarah BuchananAgents don't determine square footage.Tax records are a good place, but often you'll find that they're out of date if the owner decided to enclose a porch or convert an attached garage and didn't tell the tax assessor about it.

Everything went along well till a bit of a hiccup at the end when the seller (owns the neighboring property) realized they didn't have a direct driveway into the property and tried to 3 hours after anyone signed get an easement off of us to get access to use our driveway (no way too much liability). 

Then you view the property to determine what repairs will cost.With that information, you should be able to determine your offer - again realizing that you plan to mark it up and sell to someone who also intends to make a profit.This is what I do every day.

Government ID verified On top of all of that I use a separate Standard Rental Agreement written by my attorney to be signed electronically by all guests.

That will help determine what areas to look at.

Note that depending on your state of residence,  a LLC may not be necessary from a solo 401k investment perspective if your state offers creditor protection to solo 401k plans which is determined at the state level.

Someone in my office just listed a few acres and I am determined to sell it.

You didn't disclose what your education level in the note space is so presuming you're just starting out I don't think that's enough time to really get your bearings.I think minimally you need to determine whether you want to go performing or non-performing.