I posted this in the other thread where you said you we're going to do this, so I wanted to post it here too:

I would definitely recommend you take a small dose and not the whole thing. You can get VERY uncomfortable when you are too high.

Also, do not go into unfamilar places and take large amounts of mind-altering substances that you have never tried before (do not go backpacking in the winter and drink a whole bottle of untried green dragon).

I also would not try it right before scuba diving, tightrope walking, or hanggliding. You don't want to be at an unusual distance from the surface of the earth when it kicks in. On your couch would be better.