There are a couple of written guides in the forum's guide section (speed, group, solo GRifts), more than just the LoN GRift one.
Let me ask you this; Do you already have a geared character from another class?
I changed one of my Wizard accounts to Crusader, just took ancient items from that character/stash and put them onto the Sader. Was able to get 9 ancient items onto the Sader and some halfway decent LoN rings (Yes, there was a lot of INT there, but at least it got me going). After a day of letting it run and some rare-to-legendary conversions, I had all but one ancient (ring) with the correct item in each slot. 2 days later I went through my stash and started stacking Thorns better. I put on Crazy's Sader ItemList (in guide section, stickied) and started hitting higher GRifts.
Within a week I am all ancient, all slot have correct item, only 2 item's don't have Thorns damage (prioritize thorns damage is slots that will give you 9500 like shield and amulet).
Easily the best class to bot GRifts on.
Only shortcoming: Speed build isn't as good as one punch monk or flash fire wizard, but still plenty fast.