What would you do?

I have a rehab home that an out of state homeowner is selling. I want to do owner finacing, the homeowner owes no problem on the home.

The only problem is that other people are looking at the home and would possibly offer her cash for the home. How do I get her to do owner financing when others are(maybe) offering cash?

Asking Price: $318,000
Comps: $370,000
Rehabs: $20,000

I want to offer her $270k - $280k as the final price of the home. I want to flip the house within 2 months, and I already have a contractor waiting.

Should I offer her a large downpayment?

What should I do? What would you do?

BTW, I am looking to put my offer in tomorrow.

Read my post on calculation.