So far thinking things like:- replacing air filters- testing and replacing batteries in smoke detectors and carbon monoxide alarms- carpet and floor cleaning and/or replacement - assessing for leaks and all working sinks, showers, toilets- wall repairs and painting - appliances are in working order- deep clean- change locks and battery -replace all lightbulbs inside and out- minor repairs- landscaping Anything I am missing?

I basically take the same approach as any investing - don't sink all your capital into a single trade, know that the game is played in 3D (there is an X, Y, and Z axis - be sure to cover yourself in all directions), and NEVER invest more than you can comfortably afford to loose (this gets even truer as you get closer to retirement, adn a constant struggle as literally every dollar matters)... so back to vetting your sponsors and repeat the process!

ive shopped ola auctions where you can bid on materials like showers, sinks, vanities and pick them up on specified dates but again, pick up location is far from you, its in north royalton. also ive bought brand new stuff at like half price on Facebook marketplace like chandeliers, flooring, and vanities. ive even sold left over flooring boxes i had on there for half the price.

The first time we called them out to fix our bathroom faucet I got a bad feeling because after waiting eight hours for the plumber, he shows up, stands in the hallway and takes a photograph of the sink and faucet and walks out the front door?!?  

Let that sink in...

Along the same vein, if you have a decision to make (like taking off or buying a rental) before you pull the trigger you think through all the things that could go wrong and remove those outcomes, then you at a minimum won't fail ( either crash an A/C or sink a bunch of cash into an overpriced d-class turnkey). 

We also sink all the rental income in to paying off all the properties as it wasn’t our dream to be big.

I really hope those looking to get started read your #4 and the other one I quoted 4-5 times to let it sink in. 

On one hand the houses that are only one bath are averaging almost 70,000 lower than those with 2 baths and obviously I want a cheaper house to not sink a ton of money into but I don't know when it comes to down the road with appreciation and whenever it comes time to sell or keep as a rental.

I am fortunate enough to have a good W2 JOB that affords me many opportunities in life but what most people do quite often is they spend ENTIRELY what they make and that will eventually sink you.