Had airbags in a 2003 F150 due to a heavy popup camper. Interesting things, do yourself a favor and tie the two air lines together so the two sides are always equal. Some people like to keep them independent in case there is a lop-sided load, but I'd rather they both go flat instead of having one side with 90 psi and the other with 2 psi.
Only thing to remember with bags is that you should always have at least a few pounds of air in them even when running empty. If you don't, you run the risk of having your suspension extended out fully on rough terrain and the air bag can fully extend and then get wrecked by not following the correct path to "compressed". Happened to me and wrecked one of the bags.
Also, do yourself a favor and buy a small 12V air compressor to inflate the bags in the boonies if you need to. You may have to extend the electrical supply line though as most air compressors only come with enough wire to get you to a back tire, and not the bumper where the air valve is usually installed.