Need creative financing help!

[Dan McCarthy]

Hello! My wife and I are looking for our next investment property and I just recently got a call from a mailing I sent out to local absentee owners. The property is an off market 5 unit that rents for $675, $890, $945, $825, and $1,245. He has done all the work in the last 10 years to separate all the utilities so all he pays is th annual maintenance on the property. He is asking $500,000 and is open to carrying half through seller financing with half down but I don't know if that's the best option. We have $40,000 available for a down payment and this is more than we were looking to purchase but the rents are below market and its setup nicely. They could be $1,000, $1,000, 1,000, $1,300, and $1,300 based on the area which doesn't make us asking price unreasonable. Any help on the best way to approach this would be much appreciated! Thanks