Keep up the good work-I did put the hatch on bottom on mine and installed a canopy, powered by a ST 90, its Juuuust right. You will love this plane. Contrasting colors are a must-for me anyway. I put my 40 sized UR on floats and it is fun all over again. Also you may have to build a hatch on bottom back towards the tail feathers for the battery, to get proper balance.