I'm honestly not that familiar with working bioactive yet myself, but the other concern I would maybe have is the beep flattening out the substrate. So you may need to turn over a bit of it every few days to let the crew do their thing.
You'll definitely want to give it a bit of time to settle before adding your snake. I would think at least a couple of weeks. That way you can test run your humidity levels and give the plants a little time to settle in.
Ball pythons are prone to sometimes crushing the plants or pulling them up since they're so hefty, so letting them have room to spread a little roots will be good. Let's the buggies figure out some nooks and all.
I think you should be mostly okay with the LED strip if you center it, or maybe even settle it over the cooler side. Just put the lower light plants towards the area with less light. It'll also probably help your girl settle in since bright light isn't usually their thing. Just keep a couple cozy hides or nooks available. Maybe leave her warm hide on the darker side that way the cooler more humid side will get that plant growth for the critters.