One thing I'm curious about here is moderation; you are outsourcing it to Bluesky to a degree, but I assume you'd want a way to remove posts you don't want to reproduce on your blog beyond hoping that Bluesky management bans them?
I made something similar on my blog and had the same question. I decided to show in my blog only the comments that I liked. Therefore transforming the “like” action into an “I approve” action. But I have few comments. Not sure if is a good solution for people with a lot of comments.
Would make moderation manageable.