Agree with Lija, coco husk is a not an ideal substrate and coir is much better and more easily passed. Also moss, I don't even think that would be found in they're natural habitat but if you're using it, feed with tongs or out of the tank to prevent impaction. As long as you keep the substrate moist and provide a water dish, humidity isn't too much of a concern IMO, very hardy with that due to the where they come from. Daytime temps should be 80-84F and a few degrees cooler at night. I've read superworms can be used as a main food source without problem, though they are not ideal and I'd consider adding some crickets, locust, nightcrawlers and fish into the diet to make it varied.