How to make LIDL glider conversion to aerobatic RC plane: spins, loopings, stalls. RC. DIY

We have bought a glider in Lidl for a price of 10 euros. This glider has a wingspan of 86 centimeters. In order to reinforce the foam body, we have purchased a carbon fiber rod in Decathlon. The rod is 4 millimeters in diameter and 160 centimeters long. A piece of rod has been placed along the wings, another piece along the belly of the plane, and a last piece has been inserted in the nose through the tip. This last piece will be placed just under the battery. The battery, being the most massive object on the plane, usually breaks the nose of the foam body when any hit occurs, so a specific reinforcement is necessary for it. The horizontal stabilizer of this glider model has a certain dihedral angle. This is a hindrance when adding the elevator, so we made two cuts and flattened the stabilizer. The elevator has been made from a sheet of polystyrene foam. It has been sewn to the stabilizer in four points, and the hinge line has been covered with packing tape. The motor is tilted 20 degrees