Try not to prorate the combo too much before the dp whiff, otherwise it'll be harder to link the 6C, or it will not work.
Also, remember it's not j.C > j.CC > stuff, but j.C > dj.C > j.236D > stuff. The j.CC prorates and it will make it more difficult for you to link the combo. The 6C does have to be linked fairly quickly too.
Hope it helps, and btw that combo doesn't work on Hakumen, Tager and Valkenhayn. It will not work against Bang either unless you high jump.