Smok mods do not last very long. Bad choice. A mod not on your list is the voopoo drag or the drag 2. I have used both and with none of the issues that you will have with smok. I still currently have and use daily the drag 2. This one is slightly smaller than the original but other than that, works exactly the same. A dependable 2 battery box mod. I didn't buy the kit because I didnt want the topper that came with it as I prefer other attys. My go to is the fireluke 2. But I have several rebuildables once fireluke coils become unavailable. With smok, you will get practically the same ol thing in a myriad variety of mods and at best you will probably get anywhere from a few weeks to several months before it fails.