just from my own past experance. Biplanes are alittle harder to design. they have more variables. I built my first nes from blue fanfold so i didn't waste good depron. Now I am going to production I am using depron. I thought it was perfect until i flew it. motor placement,stab placement,and more all have tremendous effect on a biplane. Monoplanes just about throw anything together and it flys good. You mite want to do yourself a favor and build your first build from fanfold.