Good to see you again, my friend.
Those look a lot like the Air Ride set that I installed in my truck 4 years ago...... only mine are a little dirtier. If so, I'll vouch for their ability to keep the SSR level whsen carrying a load.
I had to install them when I put the Eibachs in my truck, because I occasionally (

) carry a couple hundred pounds of crap in the back and had to get the truck back up to level.
The process is simple...... I measured the rear wheel well height empty and then after loading, put enough air in to get it back up to that spot.
The only drawback I have seen is that they tend to get a little noisy after a couple years.
Simple to install.
Mike