those are great enclosures for a single mantis, might be a tad on the moist side though, try to avoid the larger size droplets. i would be careful about setting them in a window, plastic or glass enclosures that small, can overheat real easily. good idea to check your container temps with a digital therm every once in a while. i wouldnt leave any cricks that size in their container overnight. if you are going to use them as feeders, it would pay to raise them to a substantial size. an adult xanth can easily blaze through 50 or more 1" mantis in a afternoon, and all your work is gone. so it would pay to raise them to 1-1/2-2", then you could just feed a mantis or two a day for weeks. above 2'' they could concievably be hazardous, mantis also love smaller dubia (work best when they are placed on their back). great substrate choice, perfect amount of furnishing, just be careful when handling your containers, the skewers can shift and smalller mantis are easily injured. all in all, i would say youre doing a pretty good job. if it were me, once i had them sexed, i would set aside at least 4 or 5 of the nicest pairs for breeding or trading purposes. a great place for supplies and basic info is
http://www.mantisplace.com/ , if you really want in depth mantis info, the place to go for all things mantid (in depth care, sexing etc.) is;
http://mantidforum.net/ its pertty much identical to cf, but its mostly mantid. several cf members are members there as well. thats not to say, that we dont all love a good mantis thread here at cf, especially ones with good pics, new ideas, or local finds. ditto lance cham on the branch thing, and lauries too much of a sweetheart, i know if she kept them mantids for more than a couple of days, they would all turn into pets, and she would have to buy another 50 cages. jmo
I must be on the lazy side.
