Humid environment long days iem recommendations please!

Hi all, i am starting a job in a very humid environment soon as a sound assistant and I need in-ear monitors so i can also wear a hat- i have been scouring here and will get some Chu II you're all saying great things so worth a risk for the price as backups at least. I also read that they dislike moisture so will be putting any i get in a watertight container with silica packs.

I need to be able to hear clear dialogue and be able to differentiate sounds, but i do not need top of the line headphones. Obviously bass is not a concern to me. Also taking into account changeable wires, I'm assuming to bring a spare set if the cable breaks or for 3/4 months will i be fine? Senheiser ie 100/200/600 also probably a good idea.

Any suggestions welcome and appreciated!