Thanks, yesterday I was practicing and I found this works too:
6P, c.s(1), 6K, 214D, f.S, 421P, 214H, run and hit charged ball w 2K, 214S, 2S or 5s, SA,
You need kick the charged ball on ground so the blockstun let u summon the 214S ball on time to follow the pessure.
Gonna need check my inputs, thanks Dai!