I have done some changes to my stocking list(40 gallon tank), I am trying to focus on small to medium sized fish. My idea is to get a medium sized fish, and let it be the centerpiece of the tank, then let the smaller fish fill in. Here's what I've been thinking, 2 tank raised percula clownfish,4 or 5 blue/green chromises(not reef chromises), 1 cleaner shrimp, 1 flame angel, 40 blue legged hermit crabs(I will have lots of extra shells) 15 turbo grazer snails, and maybe another couple of small invertebrates. And maybe a tomato clown? I have heard they can get aggressive. Is this overstocked? Will the tomato clown be okay? There is lots of liverock, and I also have a deep live sand bed.