1. The time it takes to hit varies, but usually for me I feel it at one hour and I'm significantly high by two. Around the 2.5 hour mark is usually when I purge and get into tripping proper.
2. The waxy skin has no mescaline and it pointless to eat. Even when I brew tea I remove the skin, but it takes forever because you have to make sure not to remove any of the green part. I posted in another thread today how to do it.
3. You should endeavor to take your dose in less than an hour (under 20 minutes is ideal though). From eating it over the course of two hours you should get effects, but not nearly as strong as if it was consumed quickly. That's why tea>>>>>>eating.
4. You should be able to go again in a week, no problem, tolerance wise.
5. Next time, brew tea. It's worth the effort, for reals.