Stocking Advice for a 75 Gal FOWLR tank

Hello folks first post here. I have had my tank for nearly ten years I recently did a complete upgrade and bought a new sump, powerheads, some new live rock and such. I have a 75 gallon rectangular tank with a 3 gallon overflow and a 20 gal sump with about 1.5 inches of live sand in the bottom of the tank and sump. I have about 70-85 lbs of live rock, a mag 700 and 4 powerheads. I figure between Rock and Sand and Sump I have 50-60 gallons of actual water...I may be off on that.

So far I have two mature clowns at about 3" and 3.5"

My question is (and Ive read all over about the inch stocking capacity ranging everywhere between 2 inches per 10 gallons to 5-6 inches per 10 gallons.

What I am contemplating is the following stocklist but I fear its way too much and I wanted to see everyones opinion on the mix of fish. I am aiming for a peaceful set up with compatible fish.

What I would like is:

Hippo/Blue Tang
Yellow Tang
Flame DwarfAngel or Coral Beauty Angel
4-5 chromis
Sailfin Blenny
Yellow Tail or 3 stripe damsel
Scarlet Cleaner shrimp

about 50 snails (Turbos, bumblebee, ceriths and narssarius) and 50 hermits (blue Leg/Scarlet)

I fear thats too many fish (especially given the Tangs) using those fish (or substituting a firefish or 6 line wrasse) or peppermint shrimp (I have had some Aipistia problems in the past).

Thanks for your advice.. and glad to be here, seems like a informative site/forum.

So short of the damsels the amount of fish isnt way overboard given my sump/bioball-sand refugium? I also get that the tangs might not get along (even given different colors/patterns and if I introduce them simultaniously)

I have had both the damsels they are a bit territorial but I added them after most other fish so maybe I was just lucky...hard to pass up those beautiful colors though.