If you don't want to eat the mushrooms (and some people, including me don't like them), you can boil some water, wait ~1 minute after boiling the water, and then add the water to a mug containing the ground mushrooms, a tea bag, a bit of honey and some lemon. You've got mushroom tea.
Yes, boiling the mushrooms will degrade the actives, although to what extent I can't say. No, boiling them does not make them more potent, but it does extract the 'good stuff' into the liquid, which can be absorbed more quickly than having to have solid pieces pass from your stomach into your intestines (and getting absorbed from there). So, it can and probably will hit you faster. Some people think that exposure to weak acids (citric acid from the lemon juice as an example could make the trip slightly stronger).
1.5g is a reasonable starter dose.
Couple of points, and if you think I'm nagging, I am
but with good intentions.
1) Do not drive until the next day, no matter how capable any of you think you might feel.
2) If you've got to consider parents, then don't do the mushrooms. Find another time and place.
3) Have someone 100% sober around for the entire time. They have to be trustworthy and responsible.
4) Above all, if there is going to be anyone around who might 'fuck with you' they shouldn't be there
Have fun and a safe trip. Report back how it goes.
Tom