I have a scratch built (my design) 1/2A.....so I call it that !

Wing is 37-1/2" long with a chord of about 8",,,,,307 or so sq. inches. I flew this plane on a .09 Hornet and was a bit over powered. i am not real sure of the whgt...... what size eletric motor and or gear unit, battery should I use ? Pic is attached when it was glow.