The main idea about that tech is what you can get during the limbo stun after :4::h+k:, the :6::p+k: beforehand was used so I can put the dummy in limbo after connecting :4::h+k:, in a match yes I wouldn't use :6::p+k: first because that is slow as balls.
So yes :6::6::P: or :9::P: would be...