And we have furniture we can leave in the house. 

The property has clean but old wooden furniture, a nice china set, clothes, etc.

Please be aware that investing in medium term rentals involves a lot more than running numbers and buying furniture.

All of them gave the same pitch: waive security and first month rent because they have to invest in furnitures. 

Furniture and amenities, cleaning and turnover expenses, and maintenance and repairs are examples of variable expenditures.Mortgage payments, real estate taxes, insurance, property management fees, utilities, upkeep, and repairs are examples of fixed costs.

During this time I am working in parallel to order appliances, furniture and trying to time deliveries.

Many of the quads are brick, the stairwells are usually larger (helpful in getting a fridge or furniture up), and you just have a more solidly built structure to work with. 

If the loft area reasonably accommodates both pieces of furniture and still provides a living area that flows, why not?  

Am I able to deduct purchases of furniture that I made last year for this year? 

We'd prefer to do that so we could put more into paint, furniture, appliance upgrades, etc.