robin they will be just fine. not eating is pretty much the #1 concern people have with their new cresteds. it can take a while for them to settle and start eating as jamie said, sometimes up to 2 weeks or so. your initial success with the cgd also depends highly on what they were being fed by the previous owner. if they were being fed cgd then no worries, if not then it may take some adjustment and coaxing to get them to start eating it.

you can go ahead and start handling them now if you are ready to do so. generally speaking short handling periods won't stress cresteds to the point of not eating the way it can with newly acquired ball pythons. 3-4 days is usually enough time to let them settle before you start handling.

mix up some cgd with a little peach baby food for flavor and then get them out (one at a time obviously ). dab a little on their noses and wait for them to start licking it off--once they do hold up a small spoon with more cgd in it or just put some on your finger tip for them to lick off. that should help them to get the idea that the cgd is food and is yummy. then just leave the cgd in a dish for them like you normally would. once they start eating it out of the dish you can gradually decrease the amount of baby food that you mix in until you are mixing it without any at all.

i'm glad to hear that the boys are doing well and getting along together. also, if they didn't eat the crickets you will probably see one or two of them eating cgd out of the dish if it is shallow enough that they can get into it. sometimes i find a cricket or two in a gecko cage that way when i didn't know they were in there, and sometimes the cresteds find them that way too and CHOMP!