Cycling Question

There is so much info on cycling I just wanted to poll y'all and R2R. I have a 110gal coming, I have 100lbs of dry rock. In terms of cycling, say I get 8 lbs or so of live rock, in addition to some bottle bacteria, what am I looking at for cycle time? Is it even worth getting the live rock?

Generally, what's the deal with some saying they cycled dry rock with just bottled bacteria in a few weeks? I see others saying months. There is plenty of info on cycling but so little of it is consistent.