Buddy,
All your devices have wordclock inputs, except the MTP AV(I believe). If you're not doing any video work, I would just use it as a midi device and forget word clock.
All your other devices can be slaved to the Gen X, and that's where I would start.
If you are doing video, you've got more of a can of worms to deal with and other users can probably be more helpful than me.
Dan