Not speaking from monoleaf experience, just what I've heard from others but.........
monoleafs shorten the amount of travel that you have in the front end of your truck. Hitting a good bump/pothole or RR track can cause the front end to bottom out. Maybe Baldeagle's gas shocks help him avoid this but.....If the shocks are doing the job of the springs, that is absorbing the impact, that's probably not the best solution. IMHO - a dropped axle allows you to keep the travel that the GM engineers designed the truck to have thus avoiding the above problems. The shocks (gas is good) are allowed to do just what they we're designed to do, that is, dampen the movement of the springs that have absorbed the impact of the bump.
I'd talk with some people that actually have both set-ups before I made my decision. Enjoy the build.