No need to return anything unless you want to upgrade the bindings. You've ridden for 8 hours. you're a beginner. Riding 4 hours once a week is not riding a lot at all really. At that pace it will probably take you at least a season to progress out of that gear.
Also, longer/stiffer boards are not always an upgrade. A shorter/flexy board will help you improve better since those boards are easier to control. A high-end freeride board will hurt your progression, not help it.