CJ, you mentioned your large propane generator being in the bed of your truck. Not sure the size of it, but assuming you're in the market for a smaller generator for purposes other than ballast, have you considered attaching a hitch and hitch rack to the rear bumper of the A122S?
We did this to our pop-up and we use it to carry ice chest or other items as a means of reducing the footprint in the tow vehicle and camper while towing. We tend to pack heavy. See below the hitch mounted to the rear bumper.
We use something similar to this, ours is packed away right now, or I'd photo the exact one.
With this type of setup the offset to the tongue would be closer to 1:1, and you could store just about anything there in the right tote, whether generator or other items. Just a thought.