Hey Wanderer,
Glad you’re enjoying the build!
If you can optimize either CDR or AS, you will probably get a hair more offense out of the AS. But, CDR is better defensively, as it means you spend more time being immune to CC. There’s no obvious choice there.
Most stuff I know about the build is in the guide, but if you have any questions, ask, and I’ll answer!
Good luck out there.