I did the flooring, added new toilets, added HVAC to the house, added a garage door

If the tenant caused the issue and I can prove that I bill them back for it.For example, finding a child's toy in a clogged toilet.

In your last update you said they had until that day (Oct 15th) to pay the rent or they would be removed by that Friday.Did they actually make any payments or just been squatting there for 6 more weeks until the judge gave them another extension?

Can anyone recommend a toilet for a rental property?  

Your job is to make a profit so that when the water heater goes out you can fix it, and the toilet stops working, and the fixtures start leaking and the snow....

Replacing toilets or faucets are pretty easy.

For other expenses, I will use my Airbnb I end up replacing sheets a couple of times a year, replacement dishes (one set every year or two due to breakage), extra cleaning fees not covered by the guests or Airbnb's host guarantee, regular supply of consumables (shampoo, toilet paper, paper towels, dish soap, laundry soap, etc.

Some parts black near the toilet.

(a) Already pointed out you've got diddly and squat for decent opportunities there, ok, go where the deals are.

More toilet flushes, more feet on the flooring, more opening/closing cabinets, more turns of the faucet.