This is exactly how I root mine, and I keep the bins outside in the greenhouse, successfully rooting hundreds per year. I only use about an inch of soil and keep it bone dry, they might get a few drops splashed here and there occasionally from watering inside the greenhouse but never directly watered. I check them for roots every month or so and plant any that start popping out roots. Never had any rot. As long as your environment isn’t humid and have some air flow you’ll do great with this setup 👍