I have to admit I spoil my leo's and overfeed them with waxies (at least during breeding season- they hardly ever get them in the winter) but waxies are more of a treat for reptiles. They are definately okay to include in their diet but think of them like twinkies. One every so often is okay but a whole bunch isn't very healthy. What you are feeding sounds okay for a growing juvi. As adults its better to cut back to a few a week. As long as mealies and/or crickets makes up 90-95% of your leo's diet, and you dust them with Ca and vitamin powders, the occasional waxie is okay.
I hope this helps!
Emily
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2.4.7 leopard geckos (Nelson, Zander, Zoe, Baby, Houdini, Munch, & lots of babies)
1.1 ferrets (Oliver and Delilah)
1. budgie (Max)
0.0.1 Ring neck Parakeet (Kiwi)
1.1 German Shepards (Jake and Abigail)
www.freewebs.com/thespottedgecko