I set him up with a premium heavy polished stainless FP with all the accessories, VDH 35, Scubapro MK25/G250-R190, GB SPG - The absolute holy grail premium setup.
You can lead a person to the water but you can't make them dive, and that's what happened here.
Hopefully that will be changing.
I am currently en route home from a week on a Bahamas liveaboard.
I spent the week diving my FC stainless plate with VDH 18 wing. A dream, as always.
But, my BPW was paired with an Atomic TFX/Ti2 Octo reg set, Shearwater Teric, and AI transmitter.
I think my rig (also counting the VDH 35 I have at home) is the absolute holy grail premium single tank setup.



A 15 lb carry-on weight limit is crazy! You will be able to shave a couple pounds by replacing the inflator and octopus reg with an AIR 2-like device, and your SS Contour FP with an alum Contour FP, and eliminating the wedge altogether. (Good luck finding an alum Contour FP, though! An alum VDH vintage DH plate will work, too, instead. And others here sing the praises of plastic plates and fabric "travel" plates.)
rx7diver
Have you actually weighed those options to know that an Air2-style setup is actually ANY lighter than the optimum “classic” setup?
I have not, but I would be really surprised if it were any lighter than my setup at all.
My corrugated hose and LPI hose are both way shorter than you can safely get away with on an Air2 setup (where you have to be able to actually breathe off it while finishing a dive with an OOA diver hanging off your primary). And, my simple little power inflator (a la DGX) and Ti2 Octo don’t weigh very much. I’m skeptical that the inflator and Ti2 weigh more than an Air2. Maybe if it’s an Atomic SS2 Titanium, it might be a smidge lighter.
Either way, you’re going to have a 40” hose for the reg you would donate.
So, the differences are:
Power inflator + Octo vs Air2-style all-in-one
Short corrugated hose + short LPI hose + short LP hose to primary reg vs longer corrugated hose and longer LPI hose
The Air2 setup might be lighter. Maybe. But, I’m skeptical it’s anywhere near 2 pounds. And if it’s not specifically a very lightweight Air2-style 2nd, maybe actually heavier (than the rig I’m using).
On top of all that, I’d put my reg set up against any Air2 setup for mine being MORE streamlined in the water. My inflator will never touch the bottom. My octo hose runs straight down from the 1st stage behind my right shoulder, under my arm, and into a holder. In my week of diving I just finished, it never came loose or touched the bottom, either. With its hose routed the way it is, the hose is hugging my body for its entire length. No sticking out to the side, into the water column, and then bending down to go under my arm.
My only hose that sticks out into the water column at all is the 22” primary hose, which has to have enough slack to allow me to turn my head fully to the left. So, it does stick out a little when I’m looking ahead, and a bit more when I’m looking to the right. But, nothing like a standard 32” hose does.