I wouldn't reccomend two in the same tank even one your size. When they say not to have two males in one tank--most of the time I interpret that as going for any of the same type. For example most large angels are very similar in their behavior and reqiurements even though there are many different types of large angels. Or triggers -lots of similarities between the diffrent types. Same rule applies here--your looking at the large wrasses, very big, very aggressive, very hungry, very active and of course most are very cool.
I would choose one or the other and then give him a trigger to play with. Yes with a lunare this will be an aggressive tank now. ( I don't know if you wanted it that way or not??)