Considering the extensive rehab, there seems to be potential for a lot of unknowns during the rehab that would eat into my profits or wipe them out entirely (like major unexpected repair items, overages in current budget, or increased holding costs as my renovation scope expanded or progress gets delayed...which is bound to happen at some level).

I would also go to the top properties & rentalizer tab and cross reference the amount you can make there.STEP 2: I would also consider getting rankbreeze chrome extension, so you can see how much a property is generating a month as you look around on airbnb and/or when you click comparable/top properties via airdnaSTEP 3: As a rule a thumb, when I analyze properties, I make a general assumption that someone will be willing to pay 20% more to have a furnished apartment.

And for brick homes, some may need extensive tuckpointing which can be a huge cost once you get into larger multiunit buildings.

A forest fire that gets declared a national emergency and the IRS issues a class extension for would work. 

Note quite the extensive list as yours but they are defintely picky.

The return is on extension until October 15. 

Lose the deal and your deposit, close in cash, or negotiate an extension.

The demo and trash out was quite extensive due to hoarding.

I have done extensive remodeling in my previous career.

I’d like to see an extension quote, but it will probably have to be a replacement fence.