FYI, the Revan CRL is in the process of being updated, and the proposed CRL has a more accurate picture of his lightsaber's hilt, which is shown here.
I personally use a Vader's Vault Rev-N Elite. It is a little on the expensive side, but you don't need the saber to submit for approval, so it's something you can always pickup later.
I would personally try to make your costume fit this proposed CRL as it would suck to start on the current one and have the proposed one go into effect before you submit for approval. I personally don't know when it will become official, perhaps @DarthValkyria can provide some insight.
As for the rings, I got some brushed nickle shower curtain rings from a local hardware store.