I've considered air suspension too, but for a daily driver I think something like the Dakota digital control system with both pressure & height sensors is the way to go, almost a must to me. then finding space for all the components is a challenge in something like the fx with not much free space to begin with, especially the tank. woulda been nice if they went to 3/8" instead of 1/4" which can be a bit slow.
the strut assemblies look really great with this kit, would be awesome if they did 3/8" inlets & sold just the struts & rear bellows... then it also comes down to at what pressure ride height actually winds up... that's determined in the design... if these are designed well then at a good ride height the spring rate would be correct & they could be a great ride, so many "kits" out there are designed poorly though in there geometry that they either require too much or 2 little pressure at an ideal ride height & then ride quality goes out the window... that's the drawback to cobbling a system togeather... these look like they may be designed well, then it may be worth considering.... big $$$ though by the time you start adding electronic control to it
maintenance isn't so bad if you use a good compressor & a good air system design with a water separator with a self bleeder & have the compressor far enough from the separator that the air is already cooled by the time it enters the separator... if the seperator is being fed very hot air straight from the compressor then moisture will still accumulate past the separator kinda defeating it's purpose. install itself is a big determining factor in how good or bad a system like this will treat you. Ideally the compressor should be mounted far from the tank with a copper line in the long run to the separator before the tank to keep the system clean... water will always accumulate from a compressed air system & will cause problems if not dealt with correctly, having the compressor right next to the tank is not the best way to really deal with the condensation & can cause problems long term with sticking valves, rust in the tank & even the bags deteriorating from the inside from the moisture. most car installs put the seperator after the tank cause of this but then the tank don't stay clean... ss helps here... the air system design/install is as important as the bag setup itself. this kit does look pretty good though...