Do DMT first, rec drugs after if you must do them. I like to do DMT by myself at sunset, and have the rest of the evening to enjoy that after trip headspace, and a lot of the time I love to drink scotch/bourbon or smoke cannabis something like 30 minutes to an hour after coming down. I think alcohol is a wonderful drug, but doing it before DMT doesn't seem smart to me.
Listening to yourself when you know it's not a good time to trip is important, don't ignore that feeling when you know it's there. It never works well.
"It was altruism, not violence or force, which associated our higher cortex. Our intent is to awaken that memory." - Indigo