20 percent owner financing

[Aaron Ferguson]

I have developed a good relationship with a gentleman who is selling his 70 plus units of various types over the next 5 years.  He believes in me and what my business is about.  He has offered to sale me a 6 unit for 50k less if not more than value and on top of that he says he is open to 20% owner carry financing.  I would like to systematically purchase his properties over the span of 5 years but I only have 50k in cash reserves.  What would you suggest I do to maximize my property potential?  What kind of bank financing should I consider?