NO NO NO NO NO :!: :!: :!: :!:
You are wrong in all presumptions!!
FIRST:
Use all of them in one cook! (yes cook, 2-3 hours max)
Why all? You haven't bought them in shop from habitat region? Haven't you? I suppose Azarius, Cactiplaza, Shayana, Wackyherbs(BZP is available in this shop), Entheobotanicals or similar shop? Internet shop? :?:
Such cacti is only one fifth of "true" cacti! Maybe one fifth more.
Those shops are wonderful if you have in mind growing cacti for couple of years at special "normal" conditions. Not some young cutting which has come out from roots which have given such cacti like yours 3 years ago. Stimulated with shits, when you calculate alkaloid concentration believe me :!: very low % would be in it!!! :!:
(And) all of them, cooked, are possibly (certainly) in strength line of easy/low level mescal trip. Sorry, but this is true! :wink: