CFROG 9 Posting Pro in Training

I recently got myself into the position where it would benefit me to restructure my site ... mostly just page layout and table structures. I've heard mixed opinions about CakePHP but was thinking that if I was going to redesign that I would give it a shot. The site is well over 6000 pages with roughly 90% of it coded by hand. I understand that the majority of the site is going to have undergo an extreme makeover for me to rebuild on top of a framework. The site still be around years from now so what I want to know is do you think it's worth it to implement Cake before I get even deeper into the build years from now or at this stage should I just cut my losses, make my layout changes, and stick with what I have? Does anyone have any experience with Cake? What are your opinions on it? Does it get a thumbs up or a thumbs down?