After Micro.blog has set up HTTPS, you can re-enable the Cloudflare proxy and it should continue to work.
Ah okay, I assumed that because I was already able to visit my site using HTTPS that it was set up. Is there a way I can tell that the process is complete, or should I just give it a few days, a week, etc. before trying to re-enable the Cloudflare proxy?
For the www redirect, Micro.blog will handle that automatically. Under the Design screen, set your custom domain name to be davidcel.is instead of www.davidcel.is. That will tell Micro.blog to also redirect the www version.
Oh interesting, I thought I had to set it to www.davidcel.is for both to work! But without the www subdomain, micro.blog will redirect it? I still need both DNS records though, right?