Bike prep for the Welsh 2 day

The next event I have coming up is the biggest of the year, the Welsh 2 day enduro. I need to make sure the bike is spot on, so here's a list of what I'm going to do (other than the usual checks) between now and then, but I'll also need to squeeze in a decent ride to make sure it's OK after all the work:

• New clutch saver
• New chain
• New front and rear sprockets
• New Michelin Enduro Comp tyres front and rear
• New air filter
• New gearbox oil
• Exhaust re-pack
• Investigate a vibration coming through the bike

That last one worries me a bit. Best case scenario it's all in my head, next best thing is a loose engine mount, worst case is a worn main bearing. If that's it, the engine will have to be stripped down and I'll have a top end rebuild done at the same time. If that happens though, there will be a few events coming up that I won't be able to enter and that would be a disaster for me! Fingers and toes crossed for the Wales Air Ambulance EXC...