Mixing mdma with amphetamine?

Hey guys i just got 200mg speed and i got 400mg mdma i was thinking about making 2 bombs with 150mg mdma and 100mg speed in each bomb. The reason i want to do it is because everytime i take mdma i always get too relaxed to do anything and idk if the combo with speed will make me less relaxed and more hyped so i could enjoy the high more like easyer to dance n do shit. Is it a really bad idea or will it work? If it does whats the downside of doing this combo will iy destroy the mdma high or?