Final questions for the first try smoking

I'm reading it a long time and DMT believe to be well prepared for the first experiment, I follow this very forum and have got lots of information about assunto.Mas still have some final questions before the first attempt.

1- I bought a few months ago the bat vaporizer but I've been reading here that the best is Sherlock GV, I'm thinking of changing but first I have a question, I'll use the bat lying in bed is dangerous to burn my face because of the torch lighter ?
2- I'll have to pre-heat the copper mesh before putting dmt and the mixture?
3- What herb can I use to mix u can easily find here in Brazil?
4- To I get a breakthrough in one attempt basically I have to set the temperature and the correct size of the copper mesh?

thank you