Look, Jinglesassy, I'm going to explain to you why this is a bad idea, and why you should heed the good advice you're getting.
You're basically planning to use a pyrotechnically-propelled unguided projectile device in a public place, instead of in a proper range, and an untested one to boot. You have no idea of what your rocket will do, it could pitchover right after launch and fly parallel to the ground or hit and ricochet, and that is Trouble with a capital T.
Now, I'm a gun owner and a firework enthusiast. I enjoy both. I also take a lot of care with them because I know the kind of damage that they can deal when used without the appropriate respect. I don't shoot a firearm unless I'm on a range with proper safety measures, and I don't light up even the smallest bottle rocket unless I've checked the surroundings over and over and I know that the thing cannot possibly harm someone. As the old saying goes, it's all fun and games until someone loses an eye.
Now, it's not just for my peace of mind and for the safety of others, though this is the main reason. If something happens, I know what the backlash can be: if I behave badly as a gun owner, all gun owners are blamed. If I do something wrong with my fireworks, ALL firework enthusiast will feel the heat. There will be calls for banning this and that and tighter regulations, protect teh children, waah waah make me safe and so on.
If you carry on with your plan and something happens, ALL rocket hobbyists will be under fire through no fault of their own. If you haven't noticed, we're living in times where governments and pressure groups dream nothing else than "turning the screw" as much as they can on our individual freedoms.
I appreciate your enthusiasm but so far, you have shown you have the plans and the will to experiment and to build experience. Be patient now and contact a rocket hobbyist group: they have considerable experience that they are willing and able to share with you, and they have the know-how and the facilities. Make use of them.