More power to ya trace! I would prolly keep that ball on mice or small rat pups just take a look at his fattest part and then go to the store and pick out what you think looks the closest. I always say when is doubt, go with smaller prey. A regurge is not a fun thing to deal with! Good luck!
1.1 BCI, 1.0 honduran milk snake tange phase, 1.0 western hognose snake, 1.0 corn snake