If all you've done so far in Premiere is create Multicam wouldn't it be easier just to start again in FCPX? It's syncing and Multicam workflows are quick and would probably take less time and give you a better foundation to edit from than messing around with bringing stuff over form another NLE.
(For some reason I can't edit my own posts so apologies in advance for the stupid mistakes and bad English that I can't go back and fix)
Jeff Kirkland | Video Producer & Cinematographer
Melbourne, Australia | Twitter: @jeffkirkland
Do you have jam synced timecode? If so, you should look into Sync-N-Link X ($199). This will knock out your duties in no time at all.
Also, media management and organization is extremely critical in FCPX. Make sure you spend your spare time prepping by learning as much as your can about these topics in FCPX. Luckily, Premiere has borrowed many of FCPX's ideas on this, so think of Smart Collections as Search Bins, but subjects like Keywording vs. Bins are very important to have a solid grasp on. It's not particularly difficult, honestly it's much easier than in FCP7, Ppro, or Avid, but it is very different.