I almost created the exact same thing when I started my blog. It was a source-controlled (SVN, though) Textile powered static blogging engine.
Comments were the reason I ended up looking into wordpress and movable type. I thought heavily about autosubmitting every post to reddit or hacker news and using that as the discussion but that could be constituted as spam (or offtopic). I thought about using one of the out-sourcing services like disqus or JS-KIT. The problem (back then) was they didn't index properly on search engines and it has really really high switching costs.
If those two issues have been solved (the search engine one might have been), I'd consider switching to a static engine.
Comments were the reason I ended up looking into wordpress and movable type. I thought heavily about autosubmitting every post to reddit or hacker news and using that as the discussion but that could be constituted as spam (or offtopic). I thought about using one of the out-sourcing services like disqus or JS-KIT. The problem (back then) was they didn't index properly on search engines and it has really really high switching costs.
If those two issues have been solved (the search engine one might have been), I'd consider switching to a static engine.