Hi,
I use the hovabator. Its a cheap and really good incubator, you may want to get the circulated air model so you don't have the chance of getting hot spots. I usually start off feeding my hatchlings smaller, medium sized crickets (just make sure they aren't bigger then the babies heads) and I also leave a mealworm filled dish inside the enclosure at all times. I coat the mealies with Rep-cal and Herptivite. They usually don't eat until after their first shed, but a few of mine have eaten before that shed happens. I too wait for my females to reach 50 to 55grams before I breed them, that way they dont have any problems later on down they line. I've heard that females that breed at early ages can actually have metabolic problems as well as slower growth rates. I'd feed the female once a day and use the mineral/calcium supplement at each feeding. It also doesn't hurt to offer her a pinkie with it's rump dipped in a mineral/calcium powder... I breed my females once a year, and they tend to produce around 10 - 12 eggs per season, but some will produce more then others. I only breed them once so that they dont get over bred, sure I really enjoy seeing what hatches out but I also consider my gex my pets (as with everyone else in the forum) so I wouldn't risk their health by over breeding them. Hope that helps.
Richie