Is Red eye Ryoshu good dps againt Ricardo?

I kind of stuck at 5-30 Ricardo at moment. I Get the idea of avoid crash and pile dps on him during test buff. Problem is i don't have alot of blunt dps (only full blunt i have is Liu Ishmael) and can't burst him down before he went into Aoe spam phrase (almost need abit more firepower). I avoid borrow support ID since i want to beat him myself and i saw walpurgis night is around the corner. Is Red eye Ryoshu good dps againt Ricardo?