I plan on using USPS priority mail boxes, but do I need to add an ice pack or will it arrive fine. When I ordered mine from amazon it came in a regular box. DO I need to add any insulation to the box or protect the box somehow from the phyto incase it leaks like put a plastic liner or something? I wanna keep costs as low as possible to keep the price of my phyto as low as possible but make sure the product arrives properly.