Oh yea. K4 is a beast.
Watch some videos how to build--I like Phil and Ruby Roo. It's a PITA at first, but like everything else in life, it gets easier. I'm surprised that you got a harsh vape. Never happened to me. 29g Kanthal, 2.5 mm ID, ~1.5Ω, JOC, 9-11 watts. Like butter. Keep trying and good luck!