I'm doing a loc patriot 5.5" on a J430. Should go about 2300'-2500'. The chute is 52 inches. I have a chute release, but I'm not sure if I should use it on this flight. It hasn't failed me in the past, but I guess it is one more item that could go wrong during the flight. I have never flown a rocket this heavy before (7-8lbs) so I don't know how far it will drift.