We have air bags with an on-board compressor w/ separate adjustment side to side and the factory sway bars front and rear. Our Arctic Fox 1150 is heavy (scaled right at 5,000# fully loaded and w/water) and the CG is slightly behind the rear axle. I also have Rancho 9000 shocks. With this set up we ride level with approximately 40 psig in the air bags; while not a race car, I am completely comfortable taking corners at posted speed limits. The separately adjustable air bags are great for side to side leveling at the campground. I did try Timbrens but with the CG behind the axle the front tended to bounce too much.
I would suggest adding a rear sway bar if not already equipped, but then waiting until you pick and load-up your camper before adding other enhancements. Suspension tuning is just that, tuning, you need the load to truly tune, and remember, the success of the tune is a personal preference and judgment. Good luck and Happy Camping!!