3in track with SHR860

I currently have my engine out and big john has it as we speak turning it into a 860bb. I currently have a 16x163x2.25 track that has some wear on it and I am looking to upgrade. I am really interested in going to 3in. Questions are will I have enough power to justify this. Will 3.0 pitch 7 tooth drivers give my enough clearance or is a drop and role required.
If drivers and track are all that is needed will the $1400 that setup will cost me be that much better then say a 2.5 challenger extreme that I can get up and going for about half that. Anyone with pictures, or experience help me out here.... or anyone that knows were to get a good deal besides tracks usa.... thanks

Alright I am convinced that is what I need and what I am going to do. Now my question is I need a 162x16x3 so there are two options that I have seen the Challenger Extreme 3" that has full 16 in paddles with teeth, and the challenger x3 with straight paddles that look like they stop at 15 inches. The X3 seems to be more common and the only one that I can seem to find in that size for sale. Is this my only option, to me I would think the 16in wide paddle would be better why did they change it. I also feel the teeth on the end of the paddle would help when you do run down the trail or on hard pack. I always try to avoid trails and beaten snow but you have no choice some times..

Maybe the X3 takes less power and allows more tunnel clearance? Side hill easier?