Thanks all for the replies. I dont think i will be changing the whole transmission system just yet! i may do in the future! Very keen to hear about the chain solution though.
I am struggling with the notion that a suspension travel alters the tension in the belt, can someone explain this more thoroughly? Attached in the picture, i can see the bevel box sprocket and the axis of rotation of the rear swing arm are in-line on the same axis? Or am i missing something?