Yoey, one point, you don't HAVE to vape within the recommended wattage on any coil, you can start experimenting lower wattages if you prefer it (you may also save yourself a bit of juice, potentially, and save your throat if you are getting huge hits of nicotine.) You are correct, you can't TC Kanthal. Often to get a TC coil, you will have to build one (though manufacturers are starting to make them out of stainless steel, not sure about your tank). Also, I think 6 mg is a reasonable place to start, especially if you are sub-ohming. I didn't get nic overload doing that, and I was pretty much chain vaping a lot. It was hard on my throat and I ended up with a small, MTL tank that I vape at way lower wattage, and I really like it.
Now that you are starting out the nice thing will be that you can try different things.... A new tank you can fit on your mod is usually not the greatest expense. So if either your throat gives out (I had very sensitive smoker's throat, and didn't feel good sub-ohming at first), or you can't seem to get satisfied with the nic level you need, you do have options. That said, a lot of people start out sub-ohming and do great with it, so I hope that's the case for you.
