Psychedelic drugs aren't worth snorting, trust me, although there are exceptions like 4-ho-dpt and a few other substances. Anal administration is often the best route of administration for many of the psychedelics currently available. You can find a lot of information in this forum about its benefits.
EV/IM would be the least harmful and cleanest administration in many cases, but it is also the one requiring the most knowledge and technique.
First of all, study well which psychedelic you want to take, learn its peculiarities and act accordingly.