I think your undermining the potential for calamity here eden. Maybe your sister did, but your obviously experienced and (im guessing) was there when she partook. And even if you werent, you dont know this person. I understand where your coming from, because nothing else is like it, so its difficult to prepare. I cant imagine having an experience like that having never tested the waters. In the wrong circumstances/people and without someone with experience there with me to at the very least to eye out the dose my god. In the wrong circumstances it can cause psychological harm. Whether you start out on DMT or mushrooms or whatever, all I'm saying is be cautious especially if there isnt someone there who is experienced. It has the potential to raise you up or tear you down. Use it wisely and welcome to the mystery!

Edit: I also missed the part that you're 28. I assumed you were too young to buy cigarettes. I'm sure it will be fine, but still take care.