Pacman frogs are so cool! Congrats on the additions.
For a good dubia colony you need about 100F and 30M, But you can start getting them in smaller groups that are like $20-$30(which will cost less than getting all at once).

Here is a kind of run over post on breeding dubia. http://dragonspythonscatsohmy.blogsp...a-roaches.html
Reptimom