i dont know about what kind of dog food, but i heard to gut-load them you can feed them dog food, cat food, potatoes.
and they crickets need to be gut loaded and dusted in calcium (easiest way, take a bunch of crickets [ the amount that you think he/she will eat] put them in a ziplock bag, add calcium powder [theres a lot of commercial ones, just look at a petstore] and shake it around, and they get covered, then feed them to your beardie)
ive been looking into a beardie also, want one for my birthday coming up, but my parents probably wont want to buy me one
i have a question though, well, a couple all into one:
how much does EVERYTHING cost? them, cage, lighting, crickets (they eat a lot so i was wondering) veggies/greens..
i think thats it, if i need anything else, could you add it in there?
thanks