This thread has turned quite ugly. :-(
let's just all agree to disagree. like stated above the OP can do what he wishes, he has the information needed and can make his own decisions.
As a side note, the only reason i went saltwater was to get a tang. I've upgraded twice and now have a 4ft tank but I still won't do it. i am sooo soooo tempted though. honestly and truly. It's something I CAN do but choose not to.
if youre still there OP, there are other tang alternatives. Check out the yellow eye Kole tang. he can be in a four foot tank. I'm considering him myself.
Happy thoughts everyone!!