Where to start?!

[rhodes5150]

Hi all, I've just managed to acquire a 1990 125R which has been stood for some years. In in Plymouth, South Devon and am looking for a parts supplier and possibly mechanic. I'd love to strip and rebuild this myself but may not get the time. And will need a rolling road tune at the end too. Any supplier to use/avoid would be helpful.
So to the tech, starting at the bottom............new balanced crank or keep existing if condition ok? Athena 170cc kit or other options? Exhausts? A few to chose but I start and end with power. Any advice as to which livens the engine up the best. Reeds should these be upgraded? I've had two strokes before but not with these valves.

Thanks