if i ship a 4 inch pbass in a bag with O2 and double bag it and add newspaper in between. then add a 24 hr heat pad. and put all of this in a styrofoam thats in a box. is this good way to ship it? what are the chances of it dying. this is my first time shipping a fish. should i add some oxygen pills in it? if u have any other advice with shipping please tell me