Welcome to the site, Spance.
Since you ask, I'd have to say I'm in the 'try Ayahuasca first' camp on this one. DMT is not just weirder than you suppose (to pirate from McKenna), it's weirder than you *can* suppose. It's nice to take a few (relatively) gentler journeys with Aya, just to get a feel for how peculiar it is, and to assure yourself you will be coming back.
Either way, it's an experience worth having.
Ceci n'est pas Thesmorphia.
"Never make assumptions! That innocent rectangle could be two triangles having sex!"