The Tangs that will work for a 75 gallon are as follows:
Kole Tang
Squaretail (aka Truncatus) Tang
Tomini (aka Flame Fin) Tang
Two Spot (aka Blue Eye Kole) Tang
and if you have the funds and patience to wait for availability: The White Tail Bristletooth Tang
Even a One Spot Foxface (the smallest of the bunch) would be pushing it for a 75 gallon once it goes full sized. I have one in my 90 gallon and am crossing my fingers as it gets bigger. Of the options that you have up there I would say that the combo of the Flame Hawk and Red Lined Wrasse would add the most to your tank without crowding it in the long run.