I am trying to propose a 90/10 split for standard broker/agency transaction commission (without knowing much about market fair price) and then offer 70/30 split for the clients that he brings in.

Here we have not done any Property Tax appeals, but in a prior state I have.For large projects we can get proposals from multiple vendors, our preferred vendors or the Clients choices.

They are using Rocket Mortgage for this proposed deal I am considering.

The seller did mention that we'd have to take the proposed deal to the board and have it approved.

Do you propose the new rent increase and if they don’t agree can you ask them to leave?

What do the fees entail in their proposal?  

I'd like to propose owner financing to her because I want to avoid the closing costs of a conventional loan.  

And you're proposing a 77% carry, at 3% interest, while paying about 20% less than they are asking?

What you are proposing will take more than the $100k you have access to, and those funds I would consider as "emergency only'" money. 

If you are not familiar with SB611 then please take a quick Google Search of the law or click this link: SB611 Proposed LawThis law is a state-wide initiative that is very similar to the "PHASE II" rental protections the City of Eugene is trying to pass as we speak.