You are a long way from flying that Extra. The Extra is a big gasser, I would guess the rig would cost well over $2000 US to get in the air. You will need very high quality High Torque servos in a plane like that and I would suggest that you progress from classic trainer to a 4 Star (.60 or 1.20 size as you want to get to bigger aircraft), then move to something like a smaller Extra before you move to the 50 cc gasser. That is a lot of plane!

I have been flying for two years and moved to a 4 Star 60 at the end of last season, moving to a smaller war bird along with the 4 Star in the spring, then on to a twin. The Extra is easily a third or forth plane.

good luck!