I would simply like to add my voice to the chorus of cautions and warning being given in this thread.
Expermimentation with a quantity that forign to you in such a setting is extremely unwise, and; simply put - to this psychonaut.com 'outsiders' point of view, blatantly disrespectful to the powers of the 'Flesh of the Gods'.
The fact that the mindset you're taking in to such a crowded setting is 'I fucking love being so awesome' and 'Sometimes it really is hard to be this cool', to me, displays the disposition you'll be greeting this powerful educator with, and thus the vein in which your ego will follow - inevitably inviting this powerful substance to sit you on your arse and tell you how things are.
You may say you are 'experienced' with the substance, and don't get me wrong, I'm all for pushing the boundaries of human potential under such influences - but however unlikely it may be - should 'ego death', anything similar, or even a simple 'bad trip' occur, I can't see the situation in such a setting ending well. If you are being honest in your description that you will be trying to scare 200 people with a 'live' chainsaw, it no longer endangers your own sanity, but also the saftey of those innocent bystanders subject to your arrogance.
If things do indeed go as badly as they possibly can, and you inadvertantly injure someone during the experience, you shall become one of the many postered on the global stage as an unwilling advocate for the ban of such 'dangerous' substances...you'll become just another in the long line of punk trippers looking for a cheap ride - abusing the properties of mushrooms in the proccess - and make it that much harder for the rest of us to convince the rest of the world of the benifits and experiences that can be achieved using psychedelics. I'm not sure you, or anyone, wants that.
My final caveat; mushrooms should never be taken lightly, and as it has been said previously on this thread, are not 'toys'. The simple fact that you have recieved these answers may mean they have seeded themselves within your mind - no matter how deep you bury it with your shovel of contemptuous confidence in the garden of your own 'awesomeness' - and they will manifest themselves at the most invonvenient time, leading to a bad trip and the oppertunity for the situation described above to occur.
Just my honest opinion, If you do go ahead - best of luck
