6 unit w seller financing

[Lon Sierra]

Newer to the game here.  Looking at a 6 unit 4300 sf house turned multifamily in Springfield MO 'D' neighborhood...  occupied cash flowing and seller is open to financing it. What kind of terms should we expect with this size property?  Also- he doesn't want to deal with re agent but is ok with a buyer's agent. Feeling our way thru this one... would love any insight and/or words of wisdom. Thanks!!