pretty sure instead of 3 j.HS you can do j.HS > j.D > j.D, bad moon, that scores you a knockdown without having to waste tension. I'm not 100% sure as Ky is a bit awkward to combo in the air. That and I rarely see/play Ky players.
also I find cancelling 2HS into j.K, j.S, j.HS is much easier than just j.S, j.HS..