Your blog is the only one I know that's using CakePHP at the moment - so I'm curious to see how you will get along with it.
Many users seem happy with MT for their CMS - so it is intriguing that you've decided to ditch it. I'm with Textpattern for my own site - but I'm toying with the idea of a different CMS at some point in the future, so knowing what else I could use is invaluable.
I really like the look of your (potential) v7 preview - but it would be a shame to see this version go as I'm really starting to get used to it.
I'm sure you'll probably keep it as one of the style to switch to (maybe?)