Letting the TSP double your 5% and let that be the money you dip into in a pinch, say the property you buy needs a quick repair and you haven't had time to build the reserves you wanted. 

The husband was being transferred for his job needing to relocate and they needed to sell quickly.

The nice thinkg for you is they came and handled his affairs quickly- so refund them and move on with the new tenant. 

Give me report after report and I will read them all day every day, and I am shocked when people are so quick dismiss even one little data point.

It gets quite convoluted quite quickly. 

I get complaints constantly about how quickly and easily the tenants damage the walls with minor scuffs and fingerprints, pretty much right from the day they move in. 

I assume most off market deals are bought with cash because they are typically seller sensitive or special situations where the seller needs to move quick so I would sure if anyone has had a success story doing it.

@Mark Anderson don't be so quick to give away the farm!

Originally I put 600 credit and higher, but quickly found out that most people have 500s.

If you are on the get rich quickly track, I would not do it (and would prefer to deploy that 70K towards a few cosmetic fixers flips or just simply a better deal.