I am sitting on the offer while I continue to look for homes.The home I offered on I would like to hold for the long term and Air BNB.

I know that I have to replace air conditioning units in two of my offices in the next few years, so I have put that aside for when the time comes.Hope this  helps,

Also is it smart to do air bnb?

Air BnB? 

It needed a new furnace, central air installed, and the rest of the electrical updated.

Electrical is a tough one, but for water you can do an air test. 

You can do multiple refinances at once, but it's got to be with the same lender and at the exact same time and with full disclosure from day 0.Revisit the HELOC at some point in the future when that will be the only ball in the air until the process is done.

Also, for every pet in the home, "you should expect to get 30 fewer days of performance from your air filter" - which adds stress to the system with lack of compliance. 

Possibly thinking of doing it as an Air BNB and off season doing it as a furnished rental. 

The investor developer does not generally pay full market value as there is no money in it for them.So it sounds like you either need to re-tenant it, sell to an end user, or if there is another highest and best use a developer might buy based on dirt value and improved re-development potential with air rights to increase property values.