Is there indeed an efficient way to accomplish this, or is one of the syntheses from tryptamine/tryptophan the easiest way to achieve DMT?
Yes, the latter well-documented route is most definitely the easiest one.
DMT from Tryptophol (https://www.thevespiary.org/rhodium/Rhodium/chemistry/tryptophol.html)
(https://www.thevespiary.org/rhodium/Rhodium/chemistry/tryptophol.html)