As Crusader, in my opinion, you need to get Invoker (gamble, upgrade in cube) as soon as possible. Once you got that you can faceroll anything and even up to GR70 should be a breeze since you don't need any CHD, CHC, and so on but can go full toughness and yet have good DPS.
There might be some secret to Roland's, but my full ancient Roland's Crusader (5m sheet DPS) took 3 minutes to kill an elite on T13 on PTR. I think Roland's and Akkhan's are completely useless sets in comparison to the other class sets and you should go for Invoker's asap (even the Light set is not too bad I've heard, though I dislike Hammerdin so haven't tried).
And obviously keep every ancient item, even if it's completely crappy rolled. I think as soon as you have 5-6 random ancient items and the LoN set you'll faceroll everything with Bombardment Crusader. It can literally afk farm T13.
I just got the items for condemn but they are badly geared. I can say that I'm shredding through T12 even though my items are really really really bad. Condemn is hella strong with the new changes on Akkhan set.