Hello everyone!
Although it seems I lay dormant in these parts, I did have some time to swing by and notice that Blogger added a global SSL/TLS option for custom domain blogs. For those that aren't aware, it's actually another automated application of the free certificate platform Let's Encrypt, which I've personally used already for bringing trusted certificates to Techtronix servers.
I have set up all pages to redirect to the secured versions now, and I have tweaked Disqus to now work on these new pages. You should not encounter any mysterious mixed content errors, but if you do, don't hesitate to get in touch with me via the comments below or the contact form.
I am deciding on whether it would be worth it to write a small tutorial for enabling SSL connectivity on custom-domain Blogger sites, as it wouldn't be too difficult. For those that want to jump right to it, it's featured in the "Settings" area on the Blogger dashboard.