Great post and super glad that all turned out well... Sorry about the light!
Funny thing is that I didn't notice that this was an older thread from Nov of 2022......I actually thought it was TODAY....LOL. I checked my tide log for today and there's almost a 12ft exchange and a splash at 0950 would have been right at about peak ebb and 3.5 to 4 knots!
Bottom line is **** happens and you handled it well! I always say that you can practice and train all day on the range but no-one really knows for sure exactly how they'll react when the bullets are coming the other direction.
I pretty much dive your exact set-up with the difference being that I use a back mount 19cf pony valve side up, dedicated reg and fully charged during my dives. I do have an SPG tethered to my 2nd stage so I can monitor pony pressure in real time during a dive and more importantly during an emergency....
I also dive an Air 2. Even though I consider myself a solo diver and am configured for it, that doesn't mean that I always dive alone... So the Air 2 gives me double access to my primary back gas....which is usually also an HP Steel 102. I have 120's but usually only use those off the boat.....and they came in real handy when teaching to get multiple OW dives without swapping tanks. There were times down in Cove 2 where the vis was so bad that I'd take out students one at time with a DM for OW dives. Thank god for relief zippers!
PS..... I also have a 13cf pony for travel and bring along my transfill whip..
Pic of my dedicated pony reg..