He looks 4 or 5 weeks old to me. Check out my first pics of Kitty in my gallery, I got him when he was 5 weeks old.
Adult crickets won't happen for a loooooong time, Kitty is still only eating 1/2 to 3/4".
You better get online and order 500 to 1000 little ones asap!
Don't worry, he'll be fine. I had kitty in a small Kritter Keeper type enclosure for the first several weeks w/ no basking light only uvb. I stretched screen over the top instead of the top it came with and put some small branches in there.
-Brad