I would break it up it to several or lots of frags and keep a few in your frag tank too. 50 polyps could turn in to a few really nice frags........just my .02cents though do it up how ever you think is best!!
Typically those, IMO, would be in the standard coral and the size and or number of polyps does not come it to play for the category selection. That's how we have done it in the past and I anticipate we will do it the same this time.