I would use the Intel SDK. CocoonJS is COMPLETE garbage, unfortunately. The Intel SDK will add around 17 megabytes on to your game size but that's not something you should worry about. Most people have access to home WiFi.
The only real issue would be sticking with CJS. They have an annoying splash screen, which is bugged and looks unprofessional. Their physics support has always been garbage at best. Not to mention their actual "support forums". What a joke. I could list fifty other things wrong with CJS but I am already starting to get a headache.
Any who, stick with or start using the Intel SDK.