I think this combo might be useless for more than one reason,
Ever tried to combine mushrooms and LSD? Some type of tolerance-type thing where one completely overtakes the other.
Also, on the peak of 4-aco-dmt, many people feel like they've taken some MDMA anyway haha.
Also, 4-aco-dmt gets a bit deep, touches on the same truth DMT shows you, don't think it'd be very suitable for a rave.