It's a shame that you can't shoot some Hevishot this year. You'll love it when you do. When you decide to shoot it, go to
http://www.nitrocompany.com/and do yourself a favor and get whatever choke they recommend for your gun along with whatever shell they recommend for it. You'll be finished guessing what shell/choke combinationwill shoot the best for your gun. I guarantee it.

I wish I had stumbled onto their site when I was getting started.[:@]
Edit: Ah! I see you bought a Jelly Head choke! Heck, you're halfway home! Just get what Nitro recommends for whatever gun you shoot and your golden!