All this talk of DMT is making me curious...I've heard it's quite a short trip, is it comparable to Salvia?
Personally I have little knowledge on salvia and have never tried it myself, but i've heard that it's not the most enjoyable of experiences. If you haven't, I would strongly recommend to buy some DMT and try it, it's definitely lifechanging.
The first few times you smoke it, depending on your method/pipe It can sometimes be fairly underwhelming, as it takes a few tries to get the technique of smoking it properly, so don't expect to break through on your first time (Although It's definitely possible).
DMT is a drug that will completely change your state of consciousness, it is an amazing and spiritual experience that can give benefit different people in different ways. If done properly, you are able to completely disconnect from your body, losing all sense of the real world and simply become lost to explore a different dimension, this is 'breaking through'. The powerful nature of the drug is almost leveled out by the short lived effect of DMT, as an average trip will last around 10-20 minutes. However, this is made up for by the fact that DMT is fairly cheap, and buying 150mg is enough for 3-4 trips, so it is easy to redose.
I wouldn't recommend using a MAOI for dosing orally for an inexperienced user, but Ayahuasca will last for hours, but is a completely different trip.
I would advise and recommend everyone that has access to it to try DMT, as it can completely change your view on life.
If you wanted to make DMT last slightly longer, insufflated DMT will last around an hour. If you choose to do this, NEVER SNORT FREEBASE DMT. It will kill your nose, and being a freebase it's definitely not meant up your nose - try to find some crystal DMT, as this will be much easier on your nose.
I wish you all the best, and good luck if you do,
~DMT