I feel your pain Isaac (LITERALLY, every time I heft a cabinet into a vehicle...
). Fortunately the only band I play in currently has a dedicated SR company, so all I gig with is a 200S head and an I-40, even my stage volume comes from fold back monitors, and
still I'm semi actively looking for a 115 neo cab, or at least a neo driver for the I-40 to shave a few lbs.
The idea of wrestling a pair of 2000S cabs around isn't even on my radar, if need be I'd hire some labor when/if the inclination to drag out the big guns arises.
The fortunate thing is do I have space for all of my Sunn gear in my shop, and it's not bothering "anyone" (aka my wife).
I can't imagine selling yet, although I had some conversation with a backline company's owner a few years ago about how he felt he could probably get some interest by offering a big tube Sunn rig for national tours. They already primarily rent SVT rigs, wouldn't be much more as far as logistics, and a couple of 2000S rigs would certainly make for an unique option.