Sounds good, the only changes you should probably make are to cover the top of the screen (leave a little screen open for air, but not where he could escape) and get another hide for the cool side. Also, the more they have to stuff themselves into the hide, the better. They like snug, tight fitting hides, it makes them feel secure. The ten gallon enclosure is probably fine for now, too much "open space" can make them insecure.
Welcome to the forum and to the addicting world of ball pythons!!