Doing the Circuit in Patagonia in about a month. From what I've read, about the only thing constant there is the wind. I know I need to dress in layers to deal with the constantly changing weather. I would like to have something windproof to wear at all temperature levels. So, is it a bad idea to layer a windshirt (Marmot ION), a TNF Windwall fleece, and an eVent rain jacket? I know these are all supposed to be breathable but is the combination going to be a bad idea? I'd appreciate your thoughts.