I was advised that managing a rental would be OK, but I'm not sure that would extend to an AirBnB that requires a lot of management. 

Talking with an insurance agent friend of mine, he mentioned that it is possible to extend your personal insurance coverage to cover other properties, even if it is a rental property.

A bank might extend you an unsecured commercial line just based on the fact that you have cashflows coming in from the property.

No, I don't have any proof them leaving cat food out for an extended period of time is the only and major reason for the roaches, but then it seems too much of a coincidence it happens only after extended vacations.

So, that over what i expect. and the GC extend the time frame very very long.

In extended cold snaps, I had one-month gas bill over $300.  

Even if they weren't, ANYTHING you can do to extend the life of the system is worth it, seeing as how a replacement will cost anywhere from $25K to $50K.

I also think that the business will compensate above and beyond whatever the legal terms extend.

The expense is worth it.https://www.homedepot.com/b/Search/N-5yc1vZbmgj/Ntk-Extended/Ntt-carbon+monoxide+alarm?

This may extend your closing date, but save you many headaches in the future, especially if your in a tenant friendly state.