I don't know anything about the 3 options you mentioned. One question I would be asking is, will you be overweighted in these in warm water? Reason I ask this is that when diving in the Aegean in September, I was diving with an XDeep Ghost, steel tanks, and a 19 cu ft pony, and I had no extra weight. I was still overweighted, which made me think about possibly getting a carbon fiber BP. I was also diving in a 5 mm wetsuit. I did not shed the pony to see if that is all it took to get me neutrally or positively buoyant.
In this scenario, tropical....I think a better thinking process, is what tanks would be smart to use....and which would not be. An al 80 will always have great buoyancy issues in tropical water....but for some divers it is not enough volume for the depth and duration they desire. They could mitigate this by making themselves more efficient in the water, and significantly lowering their SAC rate....but for 100 to 130 foot dives, it is hard to argue against a larger volume tank. Some are stupidly heavy--perhaps weighted so heavy that only a dry suit diver should be using them.
The point here is that for tropical diving...there are "some tanks" that it would be stupid to use....that you should NOT accept from a dive operator when on a dive trip...
You should not be using any BC or wing as an elevator to lift extremely heavy tanks--this puts you at serious risk if you somehow get a BC failure....You should always be able to swim your tank up, from the bottom depth of your dive, with no use of a BC. Choosing the right tank, should make this easy.
With a 3 mil wetsuit, or none at all, I can use my 18 pound Halcyon wing, to keep an HP120 steel neutral , no matter what. It does take a lot of the volume of the wing at depth, but with freediving fins, I don't actually need the wing at all to swim to the surface and stay there easily...however I do need the wing if I want to be neutral 1 foot off the bottom.
Many divers would choose a 30 pound wing for the hp120.....though you really don't need any more lift than it takes to be neutral, so for many, the 30 just gives them extra room for carrying more weight they probably don't need.
Cold water divers are another story, as they have the big buoyancy swing with their wetsuits at depth, so they really DO need the extra weight....and so really do need a larger wing to accommodate this for the thicker suits and deeper dive sites....and at technical depths, this makes a drysuit essential, as the loss of suit buoyancy is so pronounced, and at 200 feet and deeper, the insulation value of a 7 mil wetsuit is about equal to a cotton teeshirt