Most legal drugs are more dangerous then MDMA, psilocybin or LSD.
That really depends on your definition of dangerous. They may not kill you, but they can screw you up real good. You are one of the smartest guys on here, especially when it comes to drugs - you've got to understand the reasons that MDMA, LSD, etc. are illegal and the drugs that are legal are legal. People didn't just decide that they were going to hate on MDMA. I admit the anti-drug lobby is nuts, and the U.S. is particularly nuts about drugs - but there is a good reason why ecstasy is advised against.
I'm not saying that any drug being illegal necessarily benefits society, all i'm saying is that they've done a decent job in choosing which drugs should and should not be illegal (if any are going to be) except maybe in the case of marijuana, but there are exceptions for marijuana in which it is made legal.
Either way, the original poster seems to have made up their mind and seems to understand the risks - thats about all you can ask for. Hopefully it turns out well for you.