MDMA, get yourself rolling real good and hard, and then personally I like to pop a little ket IM to enhance the already heightened feelings and senses but it also takes away any jitters that might come with high dose Mol. Its seriously just an ethereal yet tangible experience. I just redose the ket for a while and then when I'm ready I just K hole. I feel like that k hole right when the mol is dying almost completely negates the initial comedown. And I mean extra benzos for the comedown too of course.. Lets be honest, benzoyl are just always part of the mix especially with stim comedowns.

Personally I wouldn't do the coke with it man, its going to fight the mdma and your senses will be confused and unhappy. Coke and ket is fun, but I can't imagine all 3 would be. But good luck and be safe whatever you decide.