Hi, just wanted to drop in my .25 worth. I have two infants (just now turning 11 weeks) and a 9 month old, and I have fed them roaches, turks, lobs, and dubias from the get go. Same rule of thumb goes for the roaches as with crickets, no longer than the distance between the dragons' eyes.
Roaches pack more nutrition and protein in them than a cricket will, gut loaded !
Also, since I have 3 different species of roaches, they have variety, and the best part ? NO SMELL ! *giggle*.
The Turks and the Lobs move FAST ! That said, remember, they Move Fast and breed Fast ! Easy to keep a colony going while feeding out of it.
Hope this helps you out !
Janie.