Wanting to learn more about structuring and negotiating a seller finance deal

[Devin Cokley]

I've done a fair share of researching but some things I havent been able to get very clear answers on.

I'm looking into possibly buying a laundromat on seller finance and I want to be able to talk to the seller and negotiate terms that benifit both of us that I can still profit with the business.

I guess im looking for a clear cut of all the parts of a seller finance deal, how to structure it, and how to negotiate it if countered. 

example, If i put 10% down, they finance 90%, whats a good or bad interest rate if any, how long of a term, what should the payments look like etc

any advice would be a huge help to not only the laundromat but Real estate in general!

Thank you!