I ordered the balloon from High Altitude Science. It comes as a one-stop kit. You can see in the picture below that it will have a three part rig that will hold the instruments we need. The rig will carry a flight controller with temperature and pressure sensors, a GoPro to film the whole event, and a GPS tracking unit so that I can (hopefully) find the balloon when it parachutes back down to the ground.
I ordered the larger 600g balloon in hopes that we can get up to 110,000 feet during our launch. Now I have to do lots of studying on how exactly to assemble the balloon and rig and what to expect up there!
Then it's time to contact the students who will send experiments up there! I am hoping to contact the students who did the best in my Makerspace Class by mid-march. We will have an after school meeting where I will teach them all how to create a viable experiment to send up sometime shortly after that.
Then the launch in early to mid-May. Can't wait!