Reply to Feedback for a portion of my Missy Elliott remix in progress

Hey guys, I'm making a Missy Elliott bootleg of "Ching-a-Ling" and I'd appreciate a little feedback on the main section here. I've included the build to it and the beginning of the breakdown (the breakdown is nowhere near finished), just so you can get an idea of its context in the song.

It's not mastered, so I'm mainly looking for composition-related feedback...are all the elements there, does the structure work, does it flow, do you feel the groove? What's missing?

Rep for feedback of course.

Linky: [ame]http://www.zshare.net/audio/77234322fee7acf0/[/ame]

(You don't have to download to listen; just click the link and it'll play like soundcloud.)