Also 1mm might be abit thin depending on which rebuildable you are using. I use 2mm in my rta but 1mm would be fine in my era as you double/triple fold it
Fibreglass wick and silica wick are both fine I've heard that Cotten is great too as it in more natural and doesn't seem to moult glass fibres but I haven't tried it. I'm not inhaling thousands of potentially fatal chemicals so I'm not too worried about the wick