Well, I completely screwed up my SEO. I went for the long tail when I should have been aiming for short tail. How will it affect my rankings if I fix my post titles, headings, and link-structures, and just do a 301 redirect to the new permalink?
The new permalinks will contain the main "short tail" keywords that the old long-tail links contained, if that makes any difference.
Thanks.
Oh, one more thing I was wondering about. Is it okay, for SEO, to experiment with different headings, trying different things on a single post/page? Or is that pushing the boundary of whitehat?