I take it the most pressing issue right now is cooling. If that is right, you might have yet another avenue to explore: Ask facilities with cooling needs if you can store one or two pallets there. I’m thinking schools, (yet again) restaurants, ice cream parlors, ice skating rinks (not sure how they work exactly – is the whole building cooled or just the rink itself?), butchers. You could ask an outdoor gear shop (I mean a place where skis and winter jackets etc. are sold) if they know of a place where one can test jackets. They might know a cool place, too.