Intriguing idea. We should talk more privately.

I will mention - if you're targeting not just nerdy ladies, but mainstream ladies, I'd de-emphasize numbers and math as much as possible. Seriously, many ladies don't perform mental math that well and it will become a chore for them if they need to deal with calculators and holding numbers in their heads.
I'm sure I'll get flack from feminists here, but I'm just saying - empirical and anecdotal evidence are on my side, yo.