I would look at employment history and length at current job and run a credit check

Then I talked to their agent at length and convinced them it was in their best interest to negotiate the lower offer because the seller was not at all prepared to deal with the difficult tenant situation.

Road surfaces themselveswill be either crushed rock or concrete.Driveways- Generally 25 feet wide with approximately20 foot shoulders; about ½ mile in length in total.

it depends on the length of term how much it would change your payment,  assuming the same interest rate.

Just to get guarantee payments for that length?

@JD BallThis is not uncommon, you will have to show you have been paying the lease during this time and making payments to the new owner otherwise the lease can be terminatedOther ways a lease can be terminated is if it was not an arms length transaction (ie you are family of the borrower).

Logan would be right on for traditional financing options, if the property is paid off, or close to it, you can look at seller financing terms and then will just need to determine Price, Down Payment, Interest Rate, and Length of Term with the seller.Some sellers will go for this, others won't. 

I'd want to be able to do a quick analysis that includes the following:Agreed-upon purchase priceFinance details: amount the seller would carry back vs. the amount the sponsor brings to the table, interest rate, term length, etc.Monthly payment amount we would owe to the sellerBalloon payment owed to the seller at the end of financed periodRefinance details (ARV, long-term debt interest rate and term length, LTV ratio, etc.)Cash on cash return during the financed periodI'm creating one but I'm not sure if I have the formulas to make sure that I have the formulas correct, so I wanted to double check.

I spoke with my local bank contact and was told they have no length requirements.  

Jay and I have talked at length about this and, as he has mentioned, it is funny how history repeats itself.