Hello and great question. I am not sure about your local code on pulling window frames but I would recommend NOT jumping the existing window frame and remove it and go back with a retrofit stucco flange window to maximize glass area. Some areas it's not legal to pull frames without cutting the stucco and installing a new construction window with a nail flange but a local window installer would know that info. I am familiar with the Las Vegas market and not Cali.
As far as slimmer window frames some companies have slimmer framed series windows within there brand but I'm not sure what's available in your market. Growing up in California I remember my Dad mentioning Anlin Windows and I think he liked them but that was in the 90's. Call a local window and Siding supplier (store) with your questions and they might be able to help only biased to the brands they sell but it would be more than one option as some contractors only talk about the brand they sell.

I would double check and make sure yo need tempered first, there are many exceptions to the code.

I would look into ther replacing the glass only. Some inspectors will allow a specialty film to be placed over the glass , I believe it's a product made by 3m .