well, i have an idea for a easier build, and easy change to fit 50 - 64 - 70mm EDF´s , by master-build style. .. and possibility to serve the edf easier. Need some time (weeks) though to testmake it, and check for eg. batteryspace and such. With V-tail or normal.
Length: by 70mm EDF 1000-1100mm. 64mm EDF: 900-950mm. by 50mm EDF: 700 - 750mm, who even dont need a thrusttube, its buildt in by fuselage..
I want space for servos, without interfere with the thrusttube, possibility for electric retracts, eg. You develop to what you want. With a more mid/upper wing to stabilize flight, than lower who make the plane "twithcy" .