Making a list and checking it twice

[mtlakejim]

Ok I have read so much on here about critical running gear upgrades that people have recommended, I am thinking I need to make a list and get input on same. I have a 2018 triple axle 381TH. I am thinking about the following primarily from a safety and ride aspect and looking for confirmation and thoughts:

Disc Brakes
Timkin bearings
Better suspension links?
Shock absorber suspension add on (don't know what you call it)?
Better grade of G rated tires
Tire pressure/temp monitor
Cushion hitch pin like RotoFlex or Moyride
The steps that fold inside the door
Anything else that yall would consider "mission critical" to safe towing?

All this stuff looks to me to add up to 6 or 7 grand, shame we didn't know this when we got the loan so it wouldn't have to be out of pocket......