It doesn't look too far apart to me. There is no set distance that says male or female. Every cat will be slightly different. I'm still going with female because I would expect to be able to see bulges of testicles by 12 weeks.The opening is a small slit, but it doesn't look big enough to be a female, and it's a considerable distance from the anus.
You may have to wait a few more weeks to be absolutely sure.