We run our blog on Ghost (http://blog.commando.io), and honestly not sure there is much wrong with the node.js implementation. It can handle insane traffic, gzip, expires headers already supported. You are correct, it does not support https, but you could either run nginx in front, or modify the source code a bit.

I do love the idea of just copying a single binary (thanks go) to any server and running Journey. Is Journey's editing/writing interface up to snuff with ghost? Support for tags, SEO metadata, full markdown support, image upload?