Any way to close this without a lot of cash?

[Bogdan Glushko]

Hi all, I am a new investor and haven't closed any deals yet. I have something that came up, and I am trying to see if I can make it work, but need some help.

So I have this property, which is in a pretty hot area for rental. College is just a few blocks away, and it's a 4 bedroom single family. My estimate for property is ~165k ARV. Asking price is 135k obo.

• The owner of the house has a seller-finance in place, still owes 135k for property.
• The owner also has 15k in back taxes on property
• The owner has a personal loan of 5k for windows, which he wants us to take care of, if possible
• House needs some touch up work and a new roof within a year, cost ~10k
• Owner said he will consider a short sale

So I want to minimize the amount of cash I put out for this property. First of all, is it even possible to do a short sale + seller finance with the same person who did mortgage for the owner? I don't see why not. I assume that I will have to pay 15k in back taxes immediately, regardless of anything + 3-4k for closing. So even if I strike the agreement with the seller-mortgage person, I am still in for ~20k of cash, at minimum? 

Any suggestions about this deal? Thank you!