I'm starting my first rocket that needs some type of dual deploy because of its altitude. I know that I can get a chute release and that will fit, but why should I get that over a normal dual deploy altimeter. An easy mini altimeter is cheaper than a CR and it would eliminate the need for a separate altimeter with the chute release. Also, if I chose the dual deploy option, where could I get the ejection powder online? I found those charge canisters, but no powder on every shop I checked at online. Any advice on which to chose is very appreciated. Thanks.