hello and welcome !
that setup looks pretty nice as it is. coconut husk is a fine bedding. there are some that are less messy and dusty. live foods, try dubia, crickets, and meal worms. Search the forum for humid hide and make sure you have something akin to that.
welcome to the forum!
I would have two separate enclosures and only combine them when breeding. This way you can control the breeding easier. You will also have less stressed and healthier specimens this way. you can always put them right next to each other to help them get in the mood