Right, here's my advice before your big trip:
Get the FD rebuilt by Mikeyboy. Better to be safe than sorry as you won't be able to change a bearing in a yurt on the steppes.
Complete service with new OEM filters and all oils changed.
Thoroughly clean brakes, fit new brake pads all round and fresh brake fluid.
New Heidenau K60's or Mitas E07 tyres
Pack only what you really need.
Fill bike with fuel and head East.
You and the bike will fine.