They're amazing snakes. We got Memphis as a juvenile (she's probably a late 2017 snake) maybe 6 or so months ago, and she's just awesome. Fairly straightforward husbandry. Docile. A nice mix betwee lazy and active in her cage. Content to chill when out.
The only potential thing to be cautious of that I can think of is to be sure you're getting a decent eater. I have not personally experienced any feeding difficulty with Memphis (she's never missed a meal and we've only ever given her F/T rats. She begs for food, lol) but I've heard that Dums can be notoriously finicky eaters as hatchlings.
But you should definitely consider one! They're very underrated in my opinion.