Help crafting a seller financing deal

[Victoria Dransoff]

Good Evening All,

While this is my first post to this site, I have been reading a variety of posts over the last few months.  I am a buy and hold investor with two units under my belt for the last 15 years.  I am looking to expand my portfolio.  When I purchased that property it was through a conventional loan, so I don't know much about being creative with financing.  I would like some advice on the following prospective purchase:

5unit+6 garages (all occupied) for sale in Philadelphia for 297k

Monthly income 4100/mo.

Owner will consider financing part of the deal. I am asking for help in coming up with the terms. I would like to be able to bring an offer to the table and negotiate from there.

I have access to a $100k line of credit that I am using to acquire properties.  I would like to use as little cash out of pocket as possible.  What is a reasonable offer?

I appreciate any help you can offer.