Looks like you've done a fair amount of research.
So, you are thinking of a FOWLR
tank (no corals)? The lighting system that comes with that tank is pretty weak.
Have you considered adding a sump to your design?
I don't think that protein skimmer gets very high grades from those who have used it. I may be wrong, but hopefully others with experience will chime in.
If you use 1˝ - 2 pounds of LR
per gallon of tank capacity and a good protein skimmer then the cannister and other filters are not necessary.
I don't see any power heads for water movement included. You may want to look at getting a couple of Koralia 3 or 4's or modded MaxiJet 1200s.
I prefer snails to hermit crabs, and a variety of snails to clean different areas (rock, glass, substrate, algae, detritus).
Your stocking list is fine, but the blenny will probably die of starvation once the algae is under control. The FoxFace may get a little too big for your tank (7" - 9"). The yellow tang should also be in a 100 gallon or larger tank, but mostly in a longer (6') tank.