A great reef safe wrasse is the McCosker's Wrasse. He's one of my favorite in the tank. A midas blenny are really cool fish and such characters. Add the most aggressive fish last.
Add the fish when the tank is cycled meaning ammonia and nitrite are undetectable. Nitrates should be low like around 20 or 30 ppm
(less is better of course). The firefish can go first or the 2 clowns, but 2 fish might be too much of a bioload for such a new tank. Wait a few weeks or a month when starting out. Once your tank is more established, you can add every one or couple weeks. Add the CUC crew when the tank is cycled, and there's diatoms, algae, left over food from fish, or something for them to feed off of.