Breeding crix, (roaches are wicked illegal where I am so it is a silly point if you can't you can't move on) isn't super hard the first issue is cleaning they need clean and healthy conditions. Food and water and good quality. I use bug burger by rhapsody (sp?) as food and water. I have a few tubs filled with coco coir damp coco coir. I keep a bunch of crix adults in it and when after a while when they have been chirping a lot i'll just remove the males and leave the females in for an extra week then remove them to a cleaned new tub. The old one I'll put fresh cricket water in and a flat lid with bran and fish flakes for the hatchlings. I keep the whole works at or near the mid 80s and keep a FL light on them. You need to keep a ring of packing tape well stuck on the inside lip the pinheads can escape by walking up the walls. There are a lot of info out there this is a super basic method. I found it easier to keep a bunch together and then move than pick out females and give them a lay box. I loose tons of eggs to predation but I get enough for my beardie so it doesn't matter much. It may not be super efficient but it works for me.