Now let's talk liquid soap. Unless you SF you have to neutralize because the neutralizing is to take care of the excess lye which wouldn't exist with a SF. However, 8% is way too high and a lot of liquid soap makers do a 1% SF to be safe and not have to add citric acid. From what you are describing it sounds like you are only going to want the paste so no need to dilute, or if you do, then very little. What an awesome use of liquid soap. The glycerine method makes for easier dilution, it has nothing to do with requiring not requiring neutralizing as the laws of chemistry still apply. You sequester your liquid soap to allow for settling and clearing not to complete saponification as that is complete when you finish cooking.