The house is an emotional drain on the owners and they may step away altogether for the $70k and that would be fine, however I have an inkling that I may be able to sweeten the deal for them by giving them a cash flow stream into their retirement.  

Another plus is no state income tax in TN/TX so it even sweetens the 1031s outcome. 

I sweetened the deal . him 1/2 , his buddy 1/2  and I get it done in 30 days. 

Owner financing can sweeten an already good pie, but nothing more.

If you bring this to me and tell me I have 45-60 days to close, I may be able to line up more attractive, less expensive financing that sweetens the deal for me a bit.#6) Your biggest protectors here will be your contract and your relationship with your buyers/investors.

There's also a twist you can offer him in a note carry situation that may sweeten the pot if he wants to purchase new property.  

To sweeten the deal, I also have an 8'x8' Tuff Shed (about $1,300 at Home Depot) that was included in the sale.  

Or if the deal had to be sweetened with a 75/25 split- $22,500 for the investor and $7500 for myself.

I'm also self-managing for the time being, which sweetens the deal.

I may even sweeten the pot and offer to pay them a few thousand to help them with moving costs.