I am about to embark on a 4 engined scale model using foamboard and depron, wing span is approx 55" with a tapered wing. So questions to those of you with more experience in foam models than me what should i be aiming for ready to fly weight wise, yes i know as light as possible but what at a guess would i need to keep it under for any chance of successfully flying it. At that weight can anyone recommend motors to run on a 3s lipo pack with prop diameter 5 to 6" that is the maximum on clearance to the fuselage. All replies with constructive advice appreciated, i want to build this model at this size and if successful i will double the size for my next build.