Use cricket gel or a shallow water dish with pebbles. Crickets are retarded and die from everything and anything. I once farted near my tub of crickets and they died. True story.
As long as you provide food they shouldnt cannibalize. Use ground up hard dog food or something like that. Throw in some fruit/ vegetables once and a while.
They dont like moisture but you need damp substrate for them to lay eggs in. You can have a tub with vermiculite as the substrate and a container in there thats fairly low to the ground so they can get in full of damp substrate for the eggs.
They wont breed if the temperatures arent high enough. A heat mat/ lamp works.
They're loud, annoying, escape artists, die easy, stink like hell and I just plain hate them.