Careful with that extract.  I've read reports of people overdoing it big time and having a hellish time.

100:1 does not mean 100x as potent...it could be more or less.  I can't give you any type of dosage for it. the ayahuasca form has a thread about it you might want to read first.

As for oral xtal spice, the dosages are all over the board.  Some only need 20-30mgs for a full experience, others, like myself need as much as 250mgs for a decent experience.

I'd start with 50-60mgs spice...you can always take more later.  If you feel the spice in 30-40minutes but its very weak, you can add another 60mgs or so with a tad more caapi extract.