If you are looking to scale in a way that will allow you to use the same money over and over again and acquire more properties, you should look to get a HELOC on your house, find a hard money lender, find a fixer upper in a good air bnb location, contract everything out, use your cash to pay the hard money lender and leave your HELOC untouched for emergency reserves in case you absolutely need it (or are ready to have multiple project going on at a time.)

I have acreage with 2 homes on it and looking to add an ADU as a guest house and Air B&B.

Paul, the upper unit's furnace is in the attic, and blows air down through the ceiling. 

The valve on the very top looks like a valve to bleed the air and I don't believe that valve is necessary since any air in the system can be bled through another location including at the boiler.Cut the 3/4 inch horizontal copper pipe and start with a Sharkbite at that location, eliminate the bleed-off valve, or install a Sharkbite tee for a new valve and get a fitting to reduce the the 1/2 inch PEX.

Cap rates are compressed right now, and mania is in the air. 

The house I am closing on does not have central air.

They have all the things needed, on site, for you to live your best life and give you the separation of working remotely because an entire floor would be a co-working space.This idea came from three places, air craft carriers (which are like mini cities), military bases in general (which typically have everything you need on them), and experiences I have had working as a consultant in hotels that were wonderful.   

When I have tenants who have cats, the exterior door weather seals get ripped to shreds.Like this:or like this:and being in Florida, this increases the electric bill because the air conditioning has to run more, and the tenants complain about the electric bill.I can replace the weather seal, and three days later we are back to the same place.Is there something I can do to cat proof this?

I got the idea to do long term rental and short term rental in same building based on my experience staying at a couple air b n b properties while traveling, and saw the owners doing this with their properties.

In all of these, I installed a “downdraft bubble” or block cold air from infiltrating through the chimney and I have had no issues.