Speaking of finding rare/uncommon drugs.....If a friend and I were to take a drive to South Texas/New Mexico, how likely would it be for us to search a dry/desert area and find peyote or san pedro?

I've decided to make mescaline my next/last "trip to trip" and I have been reading a lot about it. The cultures involved in this sacred drug really intruige me. I want to touch the sky and take a trip through spirituality for the same soothing/refreshing/satisfied feeling that they achieved when taking this. When I do get access to it, I want to make it a day/night where I can really enjoy what life has to offer, not to just go to some party tripping balls.