Remember, you are making a paper plane of an computer controlled aircraft. With the proper C.G. and having the wings shaped a properly, you can make anything glide. the pictures I posted above are of an actual glider I have designed. It has no internal weights. It will easily glider 300' feet. Toss off a tall building, I don't know, because it caught a thermal and I never saw it again. These gliders also landed, with the wind cooperating, no slightly up, and landed smoothly. I am tempted to post the templates, but then some one will grab it and claim it as theirs.
If you make an object that is shaped as an airplane or jet, and do not form an airfoil into the wings, it is not a glider, it is just something you are throwing in the air.
Wings are thicker towards the root as they generate more lift there and more narrow as the wing inside is no longer lifting the craft, the the mid wing, and tips are. A wing with a straight planform, looking down from the top, like a Cessna 172, is a G.A. (General Aviation) plane that usually cruises at a single speed. Air foils are a necessity for gliders, and since a glider goes through many stages of flight, one should expect to form an appropriate wing.
On the F-22, put the widest radius on the widest part of the wing, using a round pencil or wooden dowel, from the tip, decrease the radius, keeping the overall center of lift at the 1/3rd of the width of the wing, you will see where and how the wing should look. Once you have done this, exaggerate the bends, then flatten it with a book, just enough so the slight shape will be there. You will have a very fast glider. Never add weight to the rear of a plane to make it fly. That is just a poorly designed model. Change the center of lift rearward, of course, with flat wings, you don't really know what is going on.