to the best of my knowledge (which isn't great on gargs), they have similar genetics to cresties.  while putting 2 amazing stripe animals together, you will likely end up with a stripe, but you could als end up with a reticulated... i think it has a lot to do with their genetic histories... 2 bold red parents could yeils bold red hatchlings, but could also yield dull ones... While I think gargs are a bit more reliable then cresties, I don't have experience breeding them.  You could try asking on the repashy forums, and if you have accedd to the rhac bible (wish I could remember it's real name, but it's the rhac book by philleppe di vosjoli (sp??)... wow, I'm full f useful info right now. sorry.  I'll go back to bed.   Good luck!!

Like MdngtRain stated, these guys ar ehonestly a bit more straight forward than cresteds. Usually 2 stripes will produce stripes, a stripe and a banded or a stripe and a retic will produce one of each kid. But you will find most breeders stick with one of the other so then the outcome is more constant. Plus with 2 stripes you run higher chances of producing super stripes. Normally color is a very good indicator, usually reds produce reds, black and whites produce black and whites (or at least grey and whites). Like I said much more straight forward than crested geckos. Just think about what you want to produce. Your male is a nice red stripe, I would look into getting him another nice red stripe, you should produce some lovely pairings from them. 

But if you want to best advice, I would suggest hitting up lunar gecko, Sarah has always been great with answering garg questions.

I can't claim to know a whole lot about genetics, but, I purchased a reticulated gargoyle female back in october. She laid fertile eggs that were not from my breeding her. The babies are now three weeks old, and both are striped, maybe even super stripe (I dont know where the line is drawn on that). and one of them is showing signs of intense red and orange stripes. the mother has no red, but does have a pinkish tint to her. I do not know who the father is for sure, but the guy was selling the entire collection and I know there was a red stripe male he had for sale. so, that being said....reticulated can have striped babies in my experience, and my baby, if it keeps its color, is WAY nicer then mom.