Any local chemical supply house probably has glacial acetic acid. When I was a geology student we used it by the carbouy to dissolve limestones and retrieve silicified fossils. We bought the stuff locally.

How much of the dry chemicals do you need? Chances are small quantities shipped UPS ground won't be subject to a hazard charge.

Cupric chloride is also used by artists for etching plates and also as a ceramic glaze (I think). Check with some local artists. They may have a source or would set you up with small quantities.