I'm kind of looking forward to and also kind of dreading doing the same thing (flashing Copperhead) on my 6P. I have traditionally just disabled all the Google apps from the stock ROM while retaining Google Play Services for the Play Store and push notifications. Not sure how easily I will adapt to not having either of those things on a truly Google-free phone.

I'll also be abandoning several paid apps that I've bought over the years that are only available on the Play Store. It's going to be hard extricating myself from that ecosystem.

@saiko-chriskun Please provide some details of your experience with Copperhead. We are curious to know...

I mean there's the occasional annoyance of not having the play store but been a great experience otherwise.