Klein Quantum Pro "Karma Chameleon" build

So, I'm doing a new project based on a 1998 Klein Quantum Pro in the green/purple jadechameleon colour. Post-trek but pre-shit.

It still has the MC2 MC3 MC2 Airhead cockpit/headset combo intact on there and it's all in very good condition considering the age. No play and no coarseness.

A minute ding in the TT and some small chainsuck rubbing on the left chainstay are the only things I can find that is wrong with the frame.

So a few thoughts.

I want to keep the MC2 MC3 MC2 Airhead cockpit because it looks rad and it's very light.
I want to go mechanical because I'm not ready for any electronic bits just yet.
I want it to have a compact chainset Got a 53/39 instead so it's a now turning into a crit bike.
I want it to have a light clincher wheelset in carbon whatever material
I want it at 6.5-6.8 8kg.

My budget is around £1600 all in.

What are my options? Second hand bits no doubt.

I was thinking maybe a Rotor3D24 with Praxis Buzz 50/34 rings with Dura Ace 9000 front and rear mech + shifters, or is there better bang for the buck pairings?

Cheers!