One thing you will need to adapt to, is "re-calibrating" your senses. For instance I thought and felt that my cylinders were in trim, until I saw them on camera, and realised a change I'd made while fixing one problem had caused another
I was able to chat to @RainPilot , who figured out the problem, we met up for a dive, he simply changed the rear bolt snaps for a size smaller and changed the way they were attached to the sling. We took one short dive where he made minor underwater tweaks which, when we got onto dry land, fixed so they were permanent and hey presto. No way would I have been to sort that without a second set of experienced eyes and hands.
Regarding precise gear configs, this being SB, some people will have entrenched views insisting their way is the best and only way. Certainly for some parts of a config there is a proper and best way, but for other parts of the rig, what might be optimal in one circumstance, may be sub optimal in others.
For example. Most of my SM is warm ocean diving in big currents. Because I won't be wearing a D/S and I don't like tec shorts, I have a storage pocket on each tank, and on my harness have attachments to keep my reef hook and pointer tidy and streamlined but in easy fast reach.
However if I'm making a wreck penetration, then this config offers too many negatives and entanglement possibilities, so I have minimalist cylinder harnesses and store all my line reels, smb etc on my rear butt plate. I don't like stuff on my rear plate, but for an overhead it's a necessity and the best way, so I'll tolerate it. On OW ocean dives, this isn't a necessity - driven by other circumstances so I don't need to tolerate stuff at my rear
Other people might feel differently and are happy with stuff at their rear - it's not an issue and what works best for them and their diving..
So for secondary gear, and rigging, don't be afraid to experiment as long as isn't detrimental to the primary rigging and keeping the cylinders correctly positioned
Friday i am getting tin the water at MAMOTH lake in clute TX with a buddy with a camera for that purpose.
You and I have thought processes that are very similar.