The only time you should feed two prey item a week is if it is too big to take one whole meal, but too small to go one size up, or you got some weird snake that won't convert to rats or rabbits.
Sorry to say... you are powerfeeding with 4 pinkies a week.
I feed several smaller prey items as opposed to one large one. For instance, my tiger rat and cribo get two small/med rats as opposed to one large one.
Baby cornsnake - 1 small pinky almost every week
07 carpet python and 07 Hog Island boa - 1 small mouse every week or two
06 carpet python - 1 small adult rat every two weeks
07 blood pythons - 1 small adult rat 3/5 weeks
04 Borneo pythons - 1 med adult rat 3/5 weeks
03 blood python - 1 med adult rat 3/5 weeks
What a lot of people don't realize is that snakes don't need to eat nearly as much as most people will feed them. And Reptech's snake is being overfed. It doesn't even need one pinky every week, much less four.