I have a stock pile of Safale S-04 that I need to use up. I have an RIS I brew every spring with an SG of 1.090ish. I usually use WLP0005 with a 1L starter but I figured I would sub that out and use up my S-04. I have 4 packs. How many should I pitch? I have never switched it up between liquid and dry, but I wanted to save the money and not waste my dry yeast.