Off topic about bad trips:
There is an art form to getting people out of a bad trip. My a good chick friend was having a terrible LSD comedown, so I created a physical boundry for her bad thoughts, she was in her room crying, feeling alone. So i said, once you leave this room, and play mario kart (fuck yeah) with us, all your bad thoughts will be in your room. Like a happy thoughts boundry...
worked like a charm... by charm I mean like 20min to get her to come out.. but it worked. Also about the MDMA + 4mmc, I have no idea about this, but be carefull.