I am finally 98.9% satisfied with the current lay-of-the-land. Though there are a few bits I'd still fiddle with - namely line break heights and footer margins - I am so content with all of my HTML tinkering from the past few hours that I can say with a sigh of happiness: "I'm done."
(Now I just need to manually modify each of my past blog posts so that text breaks are more compact and less sleazy.)
I'm giving myself an A+, folks.