SWIM is planning a salvia party

[Pseudo-leipä]

SWIM is planning a salvia party. There’ll be about five to ten people there, all relatively good friends, none of whom have used salvia before, but all of whom are experienced marijuana users. SWIM’s plan is for everyone to spend 4 or so hours in his garden, tripping on salvia and/or smoking weed.

What tips do people have for SWIM? How much salvia and of what potency should he buy? SWIM believes it is necessary to use a pipe and a turbo lighter? He has two pipes and a turbo lighter, so that should be okay. How likely are people to throw up? SWIM’s researched salvia thoroughly, and believes his plan to be sound, and is anticipating a great time, but any essential advice would be appreciated.