Upstairs, the primary bedroom suite (notice we're not allowed to say "master suite" anymore) adds extras such as a massage room and private terrace.

The financial returns are just table stakes, and it's >50% about creating and contributing something and having an impact on a place. 

This will dictate what kind of risks you can take on and what kind of problems you can solveOther skills/relationships/random things you bring to the table? 

Now a days, “I’m not scared to eat alone because I know what I bring to the table.”

It sounds like the Seller has negotiation fatigue honestly and just wants to close and move on at this point, so they're playing hard ball a bit to get you to the closing table.

I also have an amortization table that shows what they are owed at any point in time.Some call this a partial, some hypothecation.

It's supplied by a 2003 vintage NG boiler that I have learned to massage & tune.

To wholesale this, you'd likely have to get your father-in-law to agree to an offer even lower than the one thats on the table now.Reason being, the investor you'd be wholesaling to will not pay more than 70-75% of ARV.Best way to make money off of this, get your RE license, list the property for sale at a realistic price (or slightly below market value), get multiple offers, create a bidding war, sell for top dollar.Best,Abel

I will also be adding a kitchenette down there with Fridge and Microwave and small table.  

A Tenant-in-Common deal with $2mm to bring to the table, as mentioned above, could be a great option.