Even though you have neither of those options the yellow wire will be in rear fuse center. There actually isn't a fuse back there, the power feed starts from the center console fuse you found and passes through the rear electrical center to go to the headliner harness. However in your case the wire stops at that point since no sunroof. That would make it easy to use that wire since it doesn't need to go there.
However the pink wire would be your best choice for following reason: Notice how when you turn the car off that the radio continues to play for up to 10 minutes? Either wire would provide you with that function.
However have you also noticed that if any door other than the driver's opens the radio continues playing? Only the pink wire would give you that functionality. The yellow wire would lose power immediately when ANY door is opened.