Ye, if you have a high tolerance, then 4 should do it. Pretty much the same way [MENTION=61966]mister[/MENTION] and myself do it.
I found when I started with them, it took about 2 hours to start feeling it, then 3 hours for take off. Because there is almost a constant level in the system, I get to take off in an hour
Also as [MENTION=61966]mister[/MENTION] says, these biscuits are by far the best value for money so far. I am hoping my samples from 420 Monkeys on Monday trumps this - but will see. So far, Bobby's biscuits are king.
EDIT: They should ship tomorrow. I have ordered a few times, and every time he ships next day and I receive the day after.