The ride is great. But, that's irrelevant in your case, or most anyone else with one of these lowered rigs unless they have my same oddball setup. I'm lowered on stock coils from a Jeep Wrangler (TJ) and running Bilstein 4600s from a Jeep Cherokee (XJ). I used to keep about 6 psi in the bags at all times for a touch extra spring firmness to eliminate sway during excessive "maneuvering". I only added a few psi on top of that as needed when towing. Since upgrading my sway bars, I let all the air out of the bags as it was no longer needed.
Adjustability is the beauty of these bags. If your springs are a little soft, you can add a very small amount of pressure and compensate to your liking. Or, add enough pressure to support an additional 1,000 lbs., which is way more than you'll ever need to do.
My point is the coil springs and shocks are primarily what determine the ride quality and load characteristics. These helper bags are just for increasing the spring rate and load capacity as desired. If the rear of yours rides rough now, air bags won't soften it. You need it to ride as soft as, or softer than you want it to with just the coils and shocks, without the air bags. Then use the bags to increase it from there.