HECK YEAH go for it, it’s a great idea!Sexing’s pretty easy- I did a post on it here. There’s several great websites out there on establishing colonies! Dubiaroaches.com has a good guide, but the allergy warning is... pretty overdramatic, to be honest. You have to be handling a LOT of roaches to develop that kind of allergy, and a single person isn’t going to have an industrial roach setup with thousands and thousands of roaches. While some people do have allergies to insects, it takes quite a lot of contact to develop one. You can also put a layer of moss or eco earth or literally any particulate thing on the bottom of their bin- it helps keep the frass (dust made out of shed exoskeletons and poop) down and gives the nymphs a safe place to hide. I like moss myself! South Texas Dragons also has a good guide with lots of pictures. I started with just a few pairs of mixed adults and I add a few extra every time I go to a show. Dubi Deli sells starter colonies that come with everything you need except the bin to keep ‘em in. I really like them as a supplier- they will send you free samples of nymphs! But there’s honestly a lot of good initial suppliers, so I’d pick whoever’s closest to you- that’ll save on transit time and shipping.