Making a deal to set up future deals

[Jacob Theurer]

Wondering what you would do. 

I am about to put an offer in on my first student rental property, listed at $130k and would like to offer $120k BUT..... The seller is testing the waters a bit. She does not have to sell but is willing to for a good deal. She also owns multiple properties in the same area that she would potentially like to sell as well. I'd like to build a relationship with the seller to get a leg up on any future listings and hopefully make some off market deals. We have considered just making a full asking offer, or maybe $125k but cover seller closing costs. Just trying to be creative and make an effort to build a relationship. 

What would you do?