wafflecopter, I'm soo happy for you!
It is absolutely great what you are bringing to the experience you are about to have. Respect is the one thing that really is essential on this path. This is my opinion of course. But how can you get value out of anything if you aren't respecting it? We are making sense of it all by assigning values to different objects, values, tools...and DMT is all that. You propably will see soon enough.
For your first time, I'd go not to high on the DMT. There is nothing wrong with dosing really low...smoke, close your eyes and let it sink it. You might be surprised by the body high. LAter, you might learn to enjoy it. But even on low doses, it is very intense. Don't let that put you off. Depending on your smoking method, i would not go for higher than 25mg your first time. This, properly vaporized, will give you a fully immersive experience. But as i said...nothing, absolutely nothing wrong with starting at 10mg or something!
DMT was my first psychedelic and that's how i did it...no regrets!
Welcome man!!