I am not sure exactly but when you are packing the Ps in the bags put them in plastic containers with holes in them within inside of the bags so that they do not bite through and kill themselves by suffocation
i would say in plastic containers depending on size then get a battery operated airator for oxygen and a few of those heat pads they use for skiing and survival packs. i mean you need to ship them next day air. so really they are not in there for very long. and depending on flights from TO - HFX might only be a few hours before delivery.