Warning: This launch controller runs on a 9v battery. With a brand new battery, we were able to get maybe 4 launches before it drained it enough to not carry enough power to the igniter. You'd be better off getting a controller that runs on 4 AA batteries. At a Cub Scout Rocket day, the controllers with 4 AA lasted all day.
The rockets were great and my kids liked them, too. We lost one when the breeze caught the parachute and carried it about 500 yards and it caught on some powerlines, so I'd recommend cutting the center circle out of the parachute. It falls quicker, but with enough drag that it won't hurt the rocket when it hits the ground. In a grass field, we tested the durability without a parachute at all and it withstood the impact.