Need creative investing advice

[Isaiah Moch]

I️ have found a fourplex through Zillow that was listed as a rental, but I️ contacted the owner and asked if he was interested in selling. Long story short, he would be willing to part with the property for 150k. Each unit rents out for $500 x 4. My expenses on this unit would be just under $1000/month not including the mortgage payment. The seller seems very negotiable and I️ was thinking of doing a seller financed deal with him. My idea was something along the lines of an interest only loan with a balloon payment at the end. My thought process being that I️ would be able to cash flow the whole term of the loan, and by the end either conventionally mortgage out, or sell of the property and reinvest. Questions, comments, concerns? Thanks!