I agree, your tank is very attractive, but to make your fish feel more at home, you need to add at least a few pieces of live rock. The triggers will gnaw on it and your eel needs a home. also your beautiful wrasse will be killed by the triggers, so I would find him another home in a few months (I'd love to have him in my peaceful tank if you live in VA.)
The humu trigger is the most peaceful of the species, the clown the most aggressive, the niger is pretty aggressive as well. Your snails will also become food for them shortly.