Combinations - Mushrooms and Mescaline in a Chocolate Bar?

[ok_davey]

okay so lets say hypothetically it were my first time to do any other kind of substance besides cannabis. what if i came across a chocolate bar where there were 1.5 grams in each bar, kinda like a hersheys, where the main bar is divided into however many little bars that is. well each little section would have a gram and a half. and if i were to also find out that there was mescaline in but didnt know how much. would it be a good idea if i were to do this for my first psychadelic experience. i am in very good emotional and mental health. so thats 3 grams of mushrooms and ??? amount of mescaline. i think its a small amount. is tehre any way of telling or would you have to go to the source. and they would be from ecuador in the ecuadorian chocholate bar. what would i need to be prepared for