It certainly does sound like you're putting a lot of time and effort into this brew. It definitely looks safe to me, my only concern is the quantity of DMT, seems a little low by my standards, but then again, I'm calculating that off my bong, not yours. By my math it adds to 14g. My cone piece takes about 0.3g, which works out to about 45 cones in the brew, give or take. That makes for right around 40mg of spice per hit. Taking into consideration the bulk of MAOI bearing material your using, you might be right in the ball park, but personally I'd prefer a little more. usually takes me 60mg for a good breakthrough with vaped MAOIs, so I work my changa on those numbers and that I get a 1 cone BT almost every time (although I have been stacking a bit more in recently, definitely gonna up the dose for my next brew). But that's just my opinion. You know your mind and body better than I do, so if you've worked it out for your equipment and your brain, it sounds cool to me.
It's good to see people putting love into their changa

from one wizard to another; enjoy the magic brother!

"Laws alone can not secure freedom of expression; in order that every man present his views without penalty there must be a spirit of tolerance in the entire population." -Albert Einstein
I'm not a big fan of SWIM. I mean, I've never met the guy, but any time I hear about him, he's doing something sketchy.