I was contemplating a 105 Groupset and new Wheelset for this, but have since spec'd up something new on Ribble and must sell the Cube before I can order.
Cube Peloton 56CM
Xero X200 Wheels
New Schwalbe Lugano Tyres
Sora Shifters, Rear Derailleur & Brakes
Tiagra Chainring, Crank and Front Derailleur
Shimano HG80 11-28 Cassette
SQlab 611 Saddle
Shimano R540 Pedals
Drivetrain recently removed, cleaned and relubed. Tyres fitted Nov-15 along with new cables only done about 200 miles since. Wheels are true with no play in the hubs.
£300.
Some photos here... https://goo.gl/photos/zvLRZMfTGx2B3D7c8