I had a few ghetto properties that I tried that with and to my disgust these voucher holder would come in and question me as to why the carpet isn't plush or are there no accent walls or why the stove isn't a flat top.

I know that if i had an a/c go out in one unit and a stove go out in another, it would really be tough on me.

Also, I don't think you can except the stove for Section8 recipients as I think working stoves are required.  

I don't care how dirty the walls are or the tub is, or  the stove or floor. 

You could certainly pay more than 20k for materials if you go high end: stainless appliances, copper pipes, overpriced cabinets with granite counters, etc.I will typically pick up a fridge and stove for under $100, use cpvc or pex, get 6 feet of stock cabinets and laminate counters and then get laminate floors when they go in sale for 0.29/sqft.  

Joe, Where do you chimney the pellet stove??

I control and get to the bottom of repair requests ("my stove is broke") and upgrades and costs of turnover.  

., stove, are included to the price?

You need to identify the components (I.e. roof, A/C, stove, etc.), estimate the remaining useful life of each component, estimate the cost to replace each component and then determine the amount you need to set aside each month for each component over each component's remaining useful life expectancy.

We always disable, or remove, wood burning fireplaces or stoves in our rental properties.