Strong mid lane and backend reaction, it will need at least medium oil to work best but that drilling will help it get down lane well with the medium Rg diff the ball already has.

I have mine drilled very slightly stronger and track at 5 3/8 over with medium-high ball speed and medium revs.

I have both drilled identical I would leave it be right now, it has length built into the RG. I think it would be too close polished myself, my gravity shift hooks on about volume amount up to medium - heavy it just gets real smooth and loses it's pronounced back end reaction then.