If you like it and it works for you there's not much anyone could do to convince you it's not appropriate.
but since you asked...
- It's more than you need. And, well, if you don't need it, why take it? I have dove with Doubled PST LP 120's with 3 stages (2 80's and a 40), canister light and all the various equipment needed for a 250' wreck dive here on the east coast. A 55lb. wing is plenty of wing for that amount of gear. I can't imaging the amount of gear that would necessitate a 100lb wing. In truth, I've never used a 100lb wing so i can't discuss its relative merits. I have used a 70 lb wing & found it to be more than I needed.
- There are other considerations (diving dry vs. wet, bungied vs. non-bungied) that you haven't specified, so I'll leave those.
You asked for opinions, there's mine - free of charge and worth every penny.