I'd keep the worms in there. That sort of quickly digested food is more a part of the snake's natural diet than things like mice. I usually feed my adult several nightcrawlers, part of a pinky (the young one eats the legs and liver, he gets the rest) and maybe a fish every three days or so. The poo is a bit messier and you have to feed them more often, but I think he's more active with this diet than when I give him large rodent-only meals. Nothing wrong with doing just rodents though.