Challenging a typical convention?

This is brave of me to think about challenging a typical convention as this is what I did in my original As coursework and it didn't pay off. However, I want to make my trailer stand out and I feel that changing the voice over from a males voice to a females voice will make it memorable.
There has been many previous in depth discussions about why male voices are used instead of women's and most of the reasons have been because it is the 'safer option' for the focus groups. Focus groups can have a lot of sway as to how the film is presented to the public. A male voice is perceived as being more authoritative and dominant.
A few other questions have been asked when discussing the issue of women not being present in the voice over industry; 'Is it the the movie world isn't ready to hear women perform in a movie trailer voice over, or are there politics at work behind the scenes?'
Me being a modern woman of the 21st century thinks that the politics side of this issue is nonsense and that men and women should be given equal opportunites in every job. Women can show authority just as well as men. So therefore my trailer will convey an authorative lead character in Gracie and she will do the voice over as it is her story! I can't wait to see how this will work out. Now that the editing has been complete and I'm just deciding the final song the last thing to be added to the trailer is the voice over.
I have been roaming youtube once more and I found the first Bridget Jones' trailer. Bridget does part of the voice over and I don't think she sounds weak due to her character. Just as the female character in my film isn't weak she is independent and makes her own decisions throughout the film...have a listen in the post above, as I couldn't fit it in this post!
If it does sound weak I shall mix both male and female voice over. You have to love a bit of controversy!