Nice, very nice. I built a trailer with a similar suspension, it was to haul my jeep on, so much heavier load. The beauty of the airbags is the ability to adjust the pressure (spring rate, essentially) to the load. That trailer pulled silently no matter if it was loaded with 5000 lbs of vehicle and gear, or completely empty. I did eventually see the need for a sway bar (sold it before I installed it tho). But my load was heavier, and much higher center of gravity. The air bags were not interconnected while traveling, but I put a fitting in so when I was adjusting the pressure they were interconnected, balancing to equal pressures in either bag. Worked well