I went with the Torklift stable loads, the lower set. Ordered from etrailer on Wednesday, had them by Friday. I talked to Torklift rep first, he told me if I didn't like them, he would give me a 30 day money back guarantee, I just pay to ship them back. Sounded fair enough, so I bought them. Put them on Saturday morning. I was skeptical about the fit initially, thought there might be a clearance issue, but once bolted up, I watched the suspension travel and all was good. I've driven perhaps 40 miles with the camper since installing them, only on two lane rural roads so far. Big improvement. Firmer ride, less bounce, less sway. Took my wife out and she commented on the improvement within a mile of leaving house.
With the camper off, the stable loads easily swing between engaged and disengaged using a 3/8" drive ratchet.
I'll try them out for a few trips, and if I want more improvement, then I'll go with the airbags as you recommended 707Utte.
I got the extender hitch all together today and took the entire rig for a test ride. I was a little worried about the departure angle on the driveway, but it cleared fine. Camera monitor is mounted too.
One benefit to not getting the built in gen set is I have room to carry my grill. I found a little charbroil with latching lid that just fits. If I take a portable gen set, then that space will be used up though.
Attaching a couple of pics.