I would not risk using plastic, aluminum, or even the mflb.
100mg is a lot, I'd go 20-30-50 approximately. Definitely don't try a breakthrough for your first time, not because you wouldn't be able to handle it, but because you don't have much material to waste.
Best route is borrow a bong and do the three tokes, using a buddy for assistance. I'm assuming you already know you have to hold in the smoke no matter what. Also, a waterfall bong will be easiest to operate but gravs and waterfalls make the trip even faster and more frenetic since you get the entire bowl in one hit instead of 2-3.
Man I am so envious, I hope you have a great time.
On topic, I'm sober, cause I gotta work soonish