Chicks arriving in less than a week

My 8 chicks should arrive in less than a week and I’m about to place an order for the last remaining supplies. Does anyone recommend anything else from Jedd’s? I’m placing this order basically solely for the acidified copper sulfate.

I already have electrolytes, vitamins, dewormer, clovid, iodine spray, antibacterial ointment, feed, grit, syringes, droppers, gauze, medical tape, petroleum jelly, prep h, epsom salt