You didn't initiate it in any legal sense, but just from a best-practices, word of mouth reputation standpoint, you got the ball rolling.

This disfunction will come to your house and with patience and the ability to look at the house as a affordable investment you will be happier.

This won't leave the seller with a bad taste in their mouth for "investors".

Their role is to provide the dough, keep their mouths shut, and cash the checks you will be sending them once you successfully carry out your plan. 

I'm guessing you would have been happier had he comped it at $175k, and told you $170k would be a good sales price?

That has worked great for me and have had several deals come by word of mouth.

Don't punch a gift horse in the mouth.

Finding a word of mouth contractor is always better than searching for your own online or something.  

We were proud first time homeowners and couldn't have been happier.                                                                               

Mark, from your mouth to God's ears...Indeed if the tenant wants to risk eviction over a less than pristine stove, who am I to stand in their way -- remember they are roughly $1,300/mo. under market rent for the unit.