Provided that the eggs are fertile, I usually have all of them hatch. You will need to keep the babies separate from the adults / larger als or they will be eaten. Babies will usually start feeding within a couple days of hatching, but some may take up to a week.
Alligator lizards are prone to metabolic bone disease which is caused by insufficient calcium. I recommend dusting all prey items with rep-cal with vitamin D3 (if you decide to go with another brand of calcium supplement check the ingredients, you want one that does not contain phospherus, calcium phosphate, etc.; to metabolize calcium properly lizards need a 2:1 ratio of calcium to phospherus; since insects are typically high in phospherus, but low in calcium they'll never get the proper ratio if your supplement contains phospherus) and use a UV light to further assist with calcium metabolism. Baby als will grow at different rates so watch them carefully. It may be necessary to separate the runts to prevent them from becoming meals for their older siblings.
Baby als drink a lot more than adults so make sure water is always available. They are also prone to shedding problems if the humidity is too low. I keep my babies on paper towels which I mist lightly every couple days and change weekly.
Good luck with your eggs!
Alice