Thanks for the responses guys.
I am going to be replacing the idle gear as that seems to be the only damaged part.
The fan was working before but it did whine once on a trials training day so i gave it a bang and it stopped whining. (much like the missus)
I will make sure the water pump is 100% lined up when i put the engine back together.
As for being brave on a 300 raga, i think im more stupid than braveive crashed this bike more in the few times ive rode it then any other bike in my life. I am planning to reduce the power so its a little more forgiving.