Rough ride

To adjust and calibrate the suspension takes a dealer level tool, I've only used the GM tool for it, but I suspect the aftermarket units from Autel, Launch, Thinktool and such can do it as they mimic the software very close. What you likely could do to avoid that would be to install all the new parts but pull the compressor fuse, take it to the shop and have them cycle it (although there is no mention of it in the service information unless you replace the ride height sensors or the main control module) after you connect the hoses to the rear shocks. I know there was a bulletin issued if the system was set wrong and sat low in the rear. However, if yours sits level that doesn't apply.

https://static.nhtsa.gov/odi/tsbs/2015/SB-10090008-2280.pdf