An interesting exercise for you would be to hop on Listsource.com and run cash sales in your target zips for the last year by absentee owners and see just how many folks are finding/buying deals that cash flow.

The borrower's credit report can not have any (non-medical) outstanding collections.

This exercise and the feedback received here on this thread has convinced me that I need to revisit my offer prior to presenting it. 

These are then deductible by the individual taxpayer.Also, consider a Health Savings Account (HSA) to pay other medical expenses, such as doctor's visits, prescription drugs, dentist, etc.

The subdivision is within a mile of multiple new medical buildings, some still being built.

Limited supply in my area of affordable 3 family homes.Potential risk that tenant/buyer would default and therefore I may be able to keep the seller concessions that I was planning to put aside in order to credit back to them when they were to exercise the option.What formulas/ data driven analyses should I be considering?

In other words, when a buyer defaults - fails to pay a due installment or otherwise breaches another condition of the sales agreement - the seller will now exercise his right to deem the agreement a lease and proceed against the buyer under standard landlord and tenant law.

Strip center is 7,200 sqft office/ medical/ retail.

The damage was not enough to file with my insurance and the tenant did not seek medical attention after the event.

This region is home to Research Triangle Park, a national leader in medical and healthcare research, and currently attracts about 80 new residents a day for its strong job growth and high quality of life.