Tangs, anthias, foxface and angels....great fish all decently easy to keep and feed. I have a 180g and keep tangs as my favorite fish.
But dont forget that the smaller fish can school, such as anthias's and chromis. I currently have about 15 chromis in my tank and they really look awesome schooling through the tank. I got the basic cheap chromis, but for even more flash you could try blue reef chromis or yellow chromis, a little more $$ but they are very interesting fish.
Keep in mind the stock list will rely on your filtration and maintenance schedule as well, a huge tank ;like that with lots of big fish will require significant amounts of effort and time on your part. I also would say go with fish only, a reef would be a majorly expensive way to go and would require even more work and time.