Im seriously advocating the sig mid star, very easy to build, easy to fly, easy to fix, very light, built two of them and thinking about the third one…
Its a second plane and its capable for more then 4*40.
its a perfect match for 4 stroke 53 motor.

http://www3.towerhobbies.com/cgi-bin...?&I=LXFG07&P=7

Alex