i have to admit the pica waco is my favorite flying plane of all time. yes its not a beginners build, it does NOT build like a stick type airplane, much more to it, takes a bit to get the wings right. but if its built right, straight and true, a 1/5 scale one will weigh around 10 lbs with monocote and with a o.s 1.08 flys great, take offs if its balls to the wall will be off the ground in no more then 10' and will fly so slow on landing people watching will wonder if it will ever stop flying and settle in. yet will do loops, rolls and my favorite is a inverted flat spin. i have had 3 of them and people keep talking me into selling them. i have decided to build a 1/4 scale and THIS time i WONT sell it!!!!