I'm planning to make some jelly, following Phlux's tek, from some san pedro powder and I just wanted to ask for suggestions as to doseage.

I'm very much a hardhead so I was thinking on the order of 75-100g of San Pedro. I don't know the strength of this powder but general consensus seems to be that commercial SP powders tend to be low in Mescaline/other alkaloids and I'd rather err on the side of too much than not enough.
I was also planning to have a cup of coffee pre-jelly & possibly 2-3 Datura Stramonium seeds to potentiate the cactus.

I'd welcome any thoughts you have.

Thanks