Yup. I tried it out last night, and you're right. I did find that a good alternative for the :4::6::6::p+k: is to do :214::6::P:.
:3::p+k:, :1::P:, :P:, :h:, :214::6::P: <Wall Splat Happens Here>, :4::3::P:, :2::P:, :2::P:, :3::h+k:, :P:, :4::6::6::p+k:. 107 damage
It is less damage than...