Hi Joshua
Hopefully you have KP4 already. KP5 is out, but the current build of Sibelius (7.0.2) does not support it - the next one should. Should you wait for the new VDL template? You don't have to. And it will be worth it when it's done.
Bryan Harmsen is probably the main person that can help with the Mac side of things right now. As far as the transition goes, I'd go ahead and try to get everything setup, pretty much like you did in Sib 6. If you do have any issues though, come on back and we'll see what we can do.
Late
Hugh