(although the tang police might stop by )
All right, pull it over buddy. (I coudn't help myself!)
Tangs generally need a lot of space to swim, which usually calls for a 75G or better, even for the Yellow Tang. Yellow Tangs also demand better water quality, and a different diet than most fish I have dealt with. However, the Yellow Tang will be your window to water quality by color. I'm not here to preach to you..only as a suggestion. The rest of the list looks great though! 8)
Mike