Where can i get one im talking about over 80" wing span.

Great Planes has a 60 size, wingspan is 88 inches, Dave Patrick makes a PA-18 Super cub that is gorgeous, wingspan over 100 inches. and I forget who, but there's a 1/3 scale Arf out there i think. All other Cubs I can think of are kits.

Could this plane be used as a trainer?

As a Trainer??????

We'll i'll stick my neck out there and say any plane with light wing loading and genorous wing area, could be used as a trainer. However, I learned on a taildragger and had no problems. Cubs can be tricky for the novis, because they require a lot of rudder to keep them tracking straight down the runway. Then the combination of extremely lightly loaded wings, and you basically got a kite, so this is where a more experience pilot would be the correct fit for a Cub. It would be a shame to trash such a classic airplane. However our planes our just made of wood and glue and can always be repaired!

Just wondering with all these easy to fly planes why is it so difficult for a begginer to fly a super easy to fly plane

A Cub would be a very good trainer. But as with any plane its best to have an instructor.

I know this bugs you guys but do think theres a good chance you could fly a trainer after experience with a 3 ch park flyer and know instructer?