With 5-MeO-DMT you don't get time for benzos - it makes DMT look pedestrian in terms of duration. If PD is more positive about the stuff these days then it's more positive about the stuff these days. YMMV, and all that. Still couldn't pay me to try the stuff but am mostly basing that on the handful of reports I've had back from folk I know.
You ever tried Salvia? Another one of those ultrashort duration, ultra-intense psyches. And another one I have no intent on going back to although I've had a few goes at it previously. Bit of a Marmite one by all accounts. Most hate it but those that love it really love it. I mention it cos it's cheap and legal in the UK and has a similarly mixed reputation of being either utterly terrifying, completely amnesiacal, utterly life-changing, or a mixture of first and last. Might be worth looking into as a bit of a warm-up to get the feel for those kinda psyches. Whole other world to the longer-acting ones.
If you do decide to try it, make sure you go one at a time cos you absolutely do need a sitter for that stuff cos people can often become quite mobile and agitated whilst being completely unaware of their surroundings. They tend to be in some other world - usually on some kinda cosmic conveyor belt, spinning around things, or stuck to inanimate objects. It's about as close as you'll get to the kinda level of freakishness 5-MeO-DMT provides without being 5-MeO-DMT. Superficially similar in some ways but obviously a very different drug at the same time. Intense, short, potentially terrifying, potentially life-changing, very, very strange.