Since you said you were going FOWLR you have lots of options, but, you may want to make a choice between aggressive fish or community fish. Once you make that decision then your choice of fish becomes more limited. Scott W. Michael's Marine Fish book is great for learning more about the varieties of fish that are out there and their compatability.
In my 125 aggressive I kept yellow tail wrasse, huma huma, niger, sailfin tang, naso tang, tomato clown, 3 different morays. Made for a nice set up. But, I was limited on what else I could add to them. Never could add any snails or crabs for example.
Just something to think about.