Tang Question

[Boomboy]

I know alot of people will say different things with this but i wanted some input and some suggestions.

i just got a new tank, and i thought it would be nice to have a tang in the tank, the tank is 80G and the system is 110. the dimensions are 28x28x24. though i wanted enough room for the fish to swim and i dont want to have to just buy a small tang and get rid of it later on. so my questions are

what is the minimum tank size you would have a tang in?
would it be ok to keep one in my tank?
also what species would be happy, if any?

also if there are some websites or books i can pick up to read about them. Never had a tang before and id rather to my research. this would be my display fish if i end up getting it.

thanks everyone.