If it is your first time, I think that, if possible, you should do it alone with a sitter and get familliar with the head space that is pharmahuasca.
Your question with regards to dosing leads me to believe you have a little research to do. So You said you have some slightly yellow n,n-dmt shards. I am assuming that is freebase? Some cielo vine. I dont think that either dose that you are suggesting will be near what you need to get you there. 35mg of freebase will probably not be enough. maybe if you are hyper sensitive. The average person will probably need above 75mg to start having any kind of real noticeable effects. As for the 40 grams of cielo, I think you may want to increase that also.
The dosing is something that everyone in your group wants to get worked out before attempting a group session.
A possible outcome of this scenario you have suggested is that you have a few people on totally different levels to include someone who is waay to messed up and freaks out and causes the whole scene to be a bad one.
The probable outcome of the scenario you have suggested is that everyone gets jacked up with anxiety anticipating something that no one will experience because no one has taken enough MAOI and no one has taken enough DMT. Even the 15mg boosters will probably have you chasing hyperspace.
There are enough difficulties with preparing the cielo properly and ingesting it and holding it down long enough to become inhibited and ...... Well, I really think you should re-work this plan.
Group sessions would be better carried out by an experienced group.
My 2 cents is all.
good luck
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