My idea would be to post a long form kind 30023 https://github.com/nostr-protocol/nips/blob/master/23.md at a separate "mister-monster's blog" public key, that way followers who just want to read your blog don't have to see your day to day social discussions. Then I'd boost it with this key. You have an actual blog and I wouldnt, so you'd maybe want to include a link to the blog post URL at the bottom of the note.

I'd probably write a CLI up that reads a text file and publishes as a note. You'd probably prefer to write something up (or find something that already exists) that subscribes to your blog and when a new post appears, publishes a nostr note. That way the process is automatic, either you run a command or it happens by itself somewhere once you publish a new blog post to your blog.

For boosting with your "main" key, if you decide to go the separate key route, I'm sure there's an auto boost bot out there, but that shouldn't be hard to write either. I'm sure there's another way with delegated signing or something like that, but that's all overkill to me. I like to KISS, and 2 separate keys, one for my social and one for my long form, are perfectly fine to me.