Yo some questions to understand you better:
You say you have 5-MeO-DMT, but later on and in the title you talk about DMT - so not 5-MeO. Now what of these 2 is the actual stuff that you aquired ;D
IF it indeed is 5-MeO, then you wont need MAOI for this, it works very well without (never done it though).
Then you say you want to either use seeds as a MAOI source or Harmine, but you dont want to use Harmaline.
As seeds contain both Harmine AND Harmaline, you would ingest both nevertheless, when consuming seeds. So are you really sure you dont want to put your fingers on any Harmaline?
Also is there a special reason for this? Both are quite similar and I can clearly say there is nothing to state against Harmaline
For consumption:
- whole seeds
Pro: Just count your seeds and eat them = easy
Con: high possibility of getting illness in your stomach / nausea,
the actual content of alkaloids cant be known and so its not an exact measurement like you would get when using an extract. Not that bad, as the potency will not vary that much, so Nausea is more of a concern.
powdered seeds: Same as whole seeds. If you dont plan on doing an extract, then everything from whole seeds applies.
Harmine HCl: This is the salt form of Harmine, meaning the molecule itself is positively charged and comes in combination with a chloride-ion. These strong molecular forces drastically increase the vaporization temperature, so you will not be able to vaporize/smoke it anymore. Besides from this, there is no different activity to plain Harmine when eaten or prepared in a tea.
Harmine Base: Here the molecule is not affected by ionic forces and the vaporization temp is much lower, still much higher than DMT (and also 5-MeO-DMT). Nevertheless you can vaporize it, therefore Harmine (and Harmaline) Base are used to prepare Changa.
Now regarding the Mighty Vaporizer:
You dont be able to vaporize Harmine with the Mighty - its max setting is 210 °C and this is too low for Harmine. If you have 5-MeO-DMT instead of DMT then you maaaay also get problems, as I think MeO will vaporize somewhere in the range of 200 °C - 250 °C. But then you would have to check it out. Regarding (regular) DMT this wont be a problem, the optimal Temperature for your Mighty is ~ 170 °C.
What I would do:
If you really dont want to ingest Harmaline then you would need to extract the Harmalas (Harmaline + Harmine mixture) from the Syrian Rue seeds and then separate both. Eating whole seeds would be forbidden, as they contain Harmaline, too.
But I think this would not make sense, the easiest way would be just grinding some seeds and putting them in a hot tea for 20 minutes, then drink it - this way you get Harmaline + Harmine again.
But the most convenient would be to extract the Harmalas and then weigh 200 mg of Freebase Harmine, put it in a tea or eat it without anything else.
Then wait ~ 40 mins and then start vaping.
200 mg of Freebase Harmalas are regarded to be the maximum needed amount to get a full inhibition of enzymes = enhancement of Alkaloids (not only DMT, but also Mushrooms in your case). Everything more than 200 mg will just increase the chance for nausea, which is not prominent at 200 mg, but will strongly develop towards 300 mg. 400 mg is a 100 % safe stomach exorcism.
Eating them is also very convenient as you dont have to smoke them anymore = more chilled vaping of DMT, also they will last 2 h easily and you just needed that 1 dosage for your whole session.
Well I could have said this shorter, but I hope this may clarify some stuff.