Were all those fish in the tank when you bought it? The list of fish seem pretty aggressive. I won't say aggressive but more like semi aggressive, the damsels as they get older will probably get even more aggressive. IMO
I would have kept the sixline and the clowns and found a lfs
to give the damsels to. A foxface would be fine but only after your tank has been up awhile longer since they are a larger bio load. The raccoon butterfly fish is one of my favorite fish but I don't have a tank large enough for one.
Remember only bad things happen in saltwater, take your time and enjoy each step.