1. not enough for 2 people.. Even for one 50g will be a relatively low dose (well, with MOST of the caapi out there). But it should be enough to surely activate admixture plants/dmt
2. mushrooms and caapi are nice, but you have to be careful on mixing the two. Just taking half a normal dose of aya and half a dose of mushrooms and mixing that together can be too much. I recommend getting acquainted with vine-only brews first, especially before adding mushrooms into the mix. At lower doses you'll probably be fine but that depends on many factors
3. put it in a towel and beat it with a hammer. works like a charm
btw if you do a search or check the FAQ all of these questions have been answered many times ; )
<Ringworm>hehehe, it's all fun and games till someone loses an "I"