You may want to try this. After you put it down for a few hours or longer, try taking several deep, long draws without pressing the fire button on your mod. This will draw juice back into the coil preventing a dry hit. Those can be hard to deal with for sure.
I have tried and liked the ceramic coil in my KSM. Not kanger brand but, one that I got from LeCig. I am currently using and liking the cCell ceramic coils with my Melo 2 tanks.
BTW- Once ceramic coils get gunked up, you are able to clean them with a dry burn. I posted a video in another thread on how to do this. I will find it and post it here as well. These coils can last for a very long time if they are broken in and cleaned properly IMHO
These videos are not about Kanger brand but, they should still apply to cleaning the coils. See this thread for links.
Problem with Vaporesso cCell Coils