RE: U Can Do 3D
If you keep the weight to 8lb or under it should be great. On the gear, those formers need to be strengthened,the tri stock GP uses is not enough,you can add some to the formers vertically by reaching in from the wing saddle area. If you really want to shore it up and dont have a weight issue you can lock the 2 formers together with a block of wood,then I coat all the former joints w/thinned epoxy to prevent oil from softening the glue. I do harrier landings with this setup and some of them aren't pretty,nothing has come loose thus far.