Dilemma dilemma - what to do??

I am going to have to do something with this blog.

All the old posts have just blurred into one huuuuuuuge paragraph.

Do I reformat each post individually?

Change templates with blogger?

Migrate the whole lot to wordpress?

Just move the popular ones?

Because this is the problem. When you are coming up first on a google search, or in single figures then you want people to have an easy read. And ploughing through one huge paragraph is not easy at all.

Any suggestions out there while I muse on this one??