Crusader has become easier with 2.1 to start CDR though. Leoric's Crown with a RoRG is great for starting since even the lowest roll with the max diamond provides almost 22% of CDR. Crusader Shields can also have 8CDR as well as Vigilante Belt. Get it on your gloves, shoulders and weapon and you should just about be at the 55.55% required. Early on in Season 1 I was able to run with only a few paragon points in CDR and have perms uptime. It gets much harder once you try to wing off of Leoric's Crown and socket your jewelry. I'm sitting at just under 52% right now and only 5CDR on one ring and 0 on the other. Max CDR on paragon weapon shield shoulder gloves belt and 12.5 in akkhan's helm. Most of my deaths come in the AC downtime of less than 2 seconds.