You would probably have to buy furniture and rent it mid-term for a few years.  

Thanks Andrew for the question I have the house on furnish finder and Air bnb saying it will be furnished but I don't want to throw anymore money into the house unless I get some bookings so far in 3 months I got 2 air bnb bookings an no furnish finder  I already over leveraged myself on how much money I put into the house I'm scared to fill it up with furniture and it just sits there with no one renting it

Therefore, it’s usually best to have a written rental agreement.However, even if the agreement is oral, the landlord must give you a written statement regarding the name, street address, and phone number of the landlord or agent for receipt of legal notices; the contact information for the person who is to accept the rent; and how the rent is to be paid (for example by cash, check or money order.)It's especially important to have a written rental agreement if your tenancy involves special circumstances, such as any of the following: You plan to live in the unit for a long time (for example, nine months or a year);Your landlord has agreed to your having a pet or water-filled furniture (such as a waterbed); orThe landlord has agreed to pay any expenses (for example, utilities or garbage removal) or to provide any services (for example, a gardener).

3) What about other expenses such as furnitures, electronics, wall insulation, plumbing in the rented space?

It could be fancy furniture, amazing pool with view, unique game room, etc.

I would suggest you open up a year.Also, a few suggestions on furniture. 

One marketing method that I do is staging our rentals with a few pieces of furniture.

Deep Furniture marks and scratches visible not only up close or with special lighting, visible always. other scratches possibly from shoes or toys.  

If it looks too risky I can always do conventional 12 month lease without investing in the furniture and doodads.

Last time, we pressure washed the houses (they wanted $175 each home), painted outdoor porch railings and exterior doors, stained the decks, etc.