Something to think about and practice are "dead stick landings". Flying electric your concern will be battery life. Flying glow the concerns are flame-out, running out of fuel, or receiver battery going dead. Dead stick landings are different than landings under power. You will find this out by experience. They are an excellent opportunity to crash. When the power stops you need to land immediately because a stall is soon to happen. You cannot afford to set-up a landing, you do not have time, you must land immediately