Grant, wonderful...
Howard (hgreenblatt) is a good resource. Also you will need a pro38DAT drilling tool to set your ejection charge timing. The H-100 has a 15 second delay. Depending on your flying mass (the sim software, calculates the weight of your rocket from the input mass), your delay will want to be about 8 seconds or less. That means you will need to set the delay grain accordingly.
If you don't already have the drilling tool, don't worry, there are members who do, I always have mine. (I likewise have odd/even increment drilling adaptors and an even increment drilling tool) whereas the proDAT tool is just odd seconds. And there are members who can show you how to do this correctly.
For instance: the H100-15 is a 15 second delay. The rocksim file for the Zephyr indicates an ideal delay of 8.4 seconds (I use Open Rocket). Your delay will vary depending on the mass of your rocket. Best is to "weigh" it fully set up to fly (without the case and motor, but with all the harnesses, parachutes, etc.) and adjust the final build mass in the simulation. Better yet, bring your laptop with you to the launch. If you need a scale to get the correct mass, I believe the club has one, but I can bring one too (I usually don't bring one).
If indeed, your ideal delay is ~8 seconds, that means you need to drill your delay grain down -7 seconds
(15 - 7 = 8 ) If your ideal delay is 7 seconds (due to added mass, you still can do the same drilling, or can use an even adaptor or drill down to 15-8 = 7).
ALL THAT BEING SAID...2400' is awfully high to deploy your main parachute. The Amesbury field is notoriously breezy in a rocket eating direction (sometimes to most times).
Solutions:
Option A ) Smaller parachute (not ideal). You can use a smaller parachute than the one that comes with the rocket, but you risk ground hit damage. The stock 36" chute is going to land you softly at 6.5m/s, Amesbury is a soft field and can sometimes absorb faster descents (unless you hit a hard surface).
Option B ) Chute tender (best). Using a chute tender to hold your parachute together until you reach a lower altitude. This may be your best solution, as your rocket is not set up for dual deployment. The ejection charge will separate your rocket near apogee, then your rocket will tumble to a lower altitude. The chute tender will keep your parachute bundled until a certain set altitude, (eg. 300 to 400 feet A.G.L.) a which point it will release the chute, and your rocket will slowly descend to the ground. This will also get your rocket on the ground somewhat quicker too, because your rocket will descend that first 2000 feet quicker than under parachute. [Your 36" chute, deployed at 2400, will take you ~104 seconds from deployment to ground hit (assuming no wind). With a chute tender, you'll tumble from 2400 to 300 feet, then deploy. Your total time is ~73 seconds to get on the ground.]
Hope that helps, Good luck!
Christine