My Extra 260 Setup:

peak 26cc gas engine- APC 17x6 prop 8400 rpm (1200' field altitude)
2 - futaba S3305 ailerons
1 - S3305 ruder (in the tail)
1 - S3305 elevator (in the tail)
2 - 6v 1300 nimh packs (ignition / RX)
1 - Futaba R319DPS receiver
1 - 10 oz dubro fuel tanke ( 14 minutes fly with 10 oz !!!)

It has caerbon fiber wing tube (standart) but has aluminum landing gear (would be lighter if carbon fiber), i am very pleased with the model, really neutral flying habits, no wing rock on high alfa, excelente precision and 3D plane.
I have not weighted the model yet, but my guess is around 8.5 lbs (3.9 kilos)

Jose.