A smaller Halichoeres will be perfect for your wrasse requirements. You could maybe even do 2 in a 75 if it’s 4’ long.
Some species to look into:
-Yellow Coris
-Melanurus
-Yellow and Purple
-Red Lined
-Adorned
-Claudia’s Wrasse (“Christmas Wrasse”- Halichoeres Claudia)
-Two Tone Wrasse
-Pearly Wrasse
-Neon Wrasse
-Vrolik’s Wrasse
-Grey Head Wrasse
I would do maybe 3 different species, 1 each.
Instead of sand sifting gobies, get a shrimp Goby.
Clownfish should generally be kept to a pair.
A dwarf angel like a Coral Beauty or Flame, or any of the smaller species like the Pygmies / Fisher’s. If you want a Tang, the only ones that’ll work are a Tomini, Squaretail Bristletooth, White Tail, or maybe a Yellow Eye Kole. Yellow and Blue will have to be rehomed down the line.
x2 Ocellaris Clownfish
x1 Flame / Coral Beauty / Pacific Pygmy / Fisher’s / Fireball / Atlantic Cherub Angelfish
x2 Halichoeres spp. wrasses (example: x1 Yellow Coris, x1 Melanurus)
x1 Yellow Watchman or another kind of shrimp goby (Randall’s, Pink Bar, Wheeler’s, High Fin, Dracula, Orange Spotted etc.) + Randall’s Pistol Shrimp if you want a shrimp to go with it
x1 basslet (Royal Gramma, Swissguard, Blackcap, one of the Assessor basslets)
x1 Bicolor / Tail Spot Blenny
x1 Tomini / Yellow Eye Kole / Squaretail Bristletooth / White Tail Bristletooth Tang
x1 McCosker’s / Carpenter’s Flasher Wrasse (or another smaller 3-4” Fairy Wrasse species)
x1 Multicolor Lubbock’s Fairy Wrasse (or another smaller 3-4” Fairy Wrasse species)
Assuming your tank is 4’ long, should make for a nicely stocked tank.
If you don’t want Fairy / Flasher Wrasses and you only want one Halichoeres spp. wrasse, a trio of Firefish or Zebra Dartfish could also work, I think.