Clutching/Gearing for 3" track?

Just wondering if anyone could give a starting point on some clutching I have 2011 M8 had 153", i went to a 162 X 3" into a Kmod skid. After man handling these tracks I can tell that this 3" is alot heavier. I am installing Cutlers conversion kit with 38 helix and a set of 60 to 70 adjustable weights. Any thoughts on where I should start with weight or should I be thinking about some lower gears to turn this monster?
Thanks for any info in advance.