20-30 mgs is the optimum range for me, but it HAS to be in one breath or I do not get full on hyperspace immersion. I hear that the volcano isn't the most efficient way of ingestion simply because the bag is impossible to inhale in one go. But even so, the sub breakthrough doses are great in their own right, and totally worth the effort. Sounds like you had a solid introduction to the molecule, I look forward to hearing your experiences with higher doses / different smoking methods!

P.S. Your English is great, much better than many English people's!