Making Owner Financing attractive to seller

[Bruce L.]

I have found a 2 unit multi-family property selling for 750k. 

Taxes are $15k/yr

Rent roll is $4300/mo, or $51,600/yr

So gross operating income is $36,600 not taking into account vacancies and other potential expenses.

This leaves me with a cap rate of 4.8%.

The owner was not originally offering owner financing but they are open to hearing my offer since I agreed to purchasing near the ask. The property is owned outright.

I am still learning the process and would like to know from someone who has experience in this what a good offer would look like. 

My goal is to get into a few income properties in this area with as little money down as possible. Any strategies, suggestions, or links would be greatly appreciated.