Shouldn't be too much of a hassle. Saw that there is a wp plugin to integrate with discourse. The only question I would see is user creation. Discourse by default is supporting a lot of different authentication methods such as facebook, google, twitter etc, but because our mission/vision to disroot from those it would be silly to have them snooping around. That's why we have disabled those. We think it should be up to the community to decide those kind of things, but in our eyes we are still too small to make such decisions. Discourse also does not support posting without an account.
So if you don't mind all this and want users to make accounts on https://forum.disroot.org to be able to comment on your site, it's a 5 min job. Just tell me what category name would you like to have.
As for implementing on your blog's side I could probably help you out if you need assistance.