Kole Tang and Purple Tang...together in 65g?????

[Chaloupa]

I am thinking, for my "stupid freakin algae" to add, as someone suggested my Purple Tang to my 65g hex reef. The problem or question that I have is; will there be much aggression between the 2 or should I remove the Kole and just replace with Purple? Or what??? Any suggestions would be appreciated. My Purple Tang is my main concern for its happiness