Wellllll...it looks great and will, no doubt, fly well. However, You might consider adding an exhaust deflector....
http://www.rcplanet.com/Dubro_Exhaus...o_p/dub697.htm ....
I have very little experience with fuel power, but would personally feel better if the hot exhaust gases were defected away from the foam fuse of the Mini Mag. The device also keeps some of slime from accumulating on the fuse. I put one on my only fuel plane, a SPAD debonair...(yet to maiden). regards, rich