Nice intro essay, thanks for sharing some of your life with us 
Welcome to the Nexus! You have definitely come to the right place for DMT information 
As you may have seen already, DMT can be vaporized or ingested orally together with a MAOI (for example ayahuasca or pharmahuasca). The duration and effects are different with both methods. Is there any of these methods of ingestion that calls more your attention than other?
By the way, dont forget to check the links you received in the welcome private message, as there is a huge amount of very useful and important information regarding dmt health and safety, our attitude in the forum, chemical/extraction information, etc.
Also, we strongly advise you to, if you decide to use these substances, to either consume the ethnobotanicals or to extract dmt yourself. Please do not buy or sell dmt.
Regarding LSD, it is indeed a wonderful special substance that I learned a lot from. But do note that DMT can be very very different, so do expect to be blown away with surprise 
All the best on your re-plunge to these realms, hope you find what you are looking for!
Be sure to share your ideas or ask anything that you cant find answer to in those links I mentioned.
See ya around!