I would even consider taking listing photos with your furniture and set up as a home if you weren't already planning on doing so. 

So when I moved out, I kept the furniture -- including a huge wall-mounted TV -- and rented it out on Airbnb full-time.

I see similar listings up for $100-$180/night.I am preparing to get the property ready with about $3k in furniture, dishes, linens, and everything else to make it ready.

Anyone purchase the furniture themselves?

My longer term planning is 100% move to Kona or Hilo.If you want to know good furniture store then I can refer as well.

When you have a big cost segregation depreciation plus your big startup expenses such as furniture and supplies, and you then have a big tax deduction against your big W-2 income because your passive losses are no longer limited with your big material participation, it increases your audit risk a ton.

Try to see if you can stage all rooms. don't leave any rooms vacant especially if the rooms are small they will look even smaller without furniture. not many people can imagine a empty room but if you decorate it or show them how it can be used it will be more helpful in buyers decision process.

Subject to the existing mortgage of 170k @4% originated on 1/1/2022 plus catching up 20k of arrears/escrow/legal fees and then eventually Airbnb Furniture and holding costs of another 15k from private money.

Factor in startup costs for furniture and marketing.  

Some people spend a fortune on scuba gear, guns, boats, mountain bikes, furniture, whatever.