So I gotten this 28ga kanthal a1 wire for my coil. Was trying to vape at different ohms, mainly 1.5 1 and 0.7. I find it preferably to vape at .7 but I only using 4 wraps for my coil. Is it safe to use as I don't have a resistance meter beside my mod. I'm asking cause I know to hit sub ohm should use lower gauge wire.