Trying to build a balsa plane from scratch and (I assume) teach yourself to fly is almost impossible. If you remain in this hobby for any length of time, it will be a lot more expensive and time consuming than buying balsa and 10 hours. I taught myself to fly twenty years ago with a beginner glider with Cox .049 engine, two channel radio. The plane was so slow and stable in the air that you could change stick directions to correct control errors when needed without crashing. I also flew in a field covered with 5 foot high grass, so I landed on top of the grass, and the plane never hit the ground. I would also suggest buying a simple balsa kit for rubber band power to practice building, even if it never flies. Most important, get to a local flying field and get help, that will save much time and money.