Nicely done. congratulations, I've been breeding ball pythons for over a decade and have never had a double sired clutch.
One thing I'd like to note about egg orientation, sometimes having them rightside up IS necessary. I've got a female that I've had many clutches from but in the early years half of her clutch would die every time. I took to candling them after they were laid and found that half of them were upside down orientation wise. I cut the clutch apart and re-oriented the upside down ones and that was the first year I had a 100% hatch rate from that female. I'm sure that a lot of the time egg orientation isn't a big deal, BUT.... sometimes it is.
The last few years I've taken to pulling apart the clutches (if it can be safetly done) candling them and laying them out embyo side up in the incubation boxes. I still lose some eggs, but I don't think it's hurting anything.