I'd hold off on the mandarin for quite some time, almost impossible tokeep alive, trust me, I have one. They need an established tank with lots of pods
which won't appear overnight or even over a month.
The only other warning I would give is the sea hare. I have one and they get quite large! Mine was about 2-3 inches a few months ago and now he's like 6 inches or better. Plus they eat algae and after thats gone you have to keep feeding him algae sheets. They also get sucked up in filters, powerheads and overflows. I've been really lucky with mine. A friend of mine just had hers sucked up by an aquaclear filter intake and it wasn't pretty. :-(
Otherwise your list looks good, can probably add another fish or two depending on what they are.
Also, out of all the clowns I believe the maroons are the most aggressive while the b&w's are the most meek. lol
Someone correct me if I;m wrong as I dont have a maroon clown.