The size and/or quality of the deal seem to be at stake. 2.)

It's hard to know how much it will cost to restore the home without any info on the size or extent of the damage. 

Your best bet would be to call small local banks near the property and see if they will look at a reduced doc. loan where they don't focus on your W2 or credit depth. 

I think a lot of my questions regarding the BRRRR strategy revolve around the response you gave.I'm having a hard time understand how a full gut of any size can be done for 15-20K.My wife and I recently completely gutted our 2100SF home, and aside from the higher end finishes, we were looking at 50K easily.

Those look like standard sized easy to find columns.

That said, your best bet is to get on the phone and start networking with contractors and looking at their work (go to their jobs) and finding out their pricing and what they are charging for the flips you're looking at. 

By size, asset type, area, etc. 

Develop some kind of outsized persona.Sophisticated family offices, institutions, and high net worth investors do not invest with sponsors based on their being boisterous, braggadocios, and having out-sized personas. 

Ultimately, it makes little sense to sell the house you're in now for 850k if you're going to have to turn around and buy a house for you to live in at say 750k to 850k because thats where the price point is in your area for a home that you will be satisfied with.Your best bet then would be to stay where you're at and get a heloc and use that bo buy the 280k rental property. 

It really just depends on how much equity is still left after the cash-out that you already did.It sounds like your best bet would be to get a HELOC and use the remaining equity to buy another deal.