Not Susie, but I think she meant that just looking at the numbers and trying to come up with the perfect combination by starting to include all kinds of oils will not give you the best result. (Yes, we have all done that.) Soap made with a few oils can be just as nice as ones made with many. Even if the numbers are not "perfect". You have to figure out what is the feel you really like, and which oils give you that. Numbers will not tell you that part necessarily (although they can be useful as guidelines).
And yes, waiting 6-8 weeks can make a big difference in how a soap feels / behaves. Once you have made enough batches, it will be easier to wait since meanwhile you can use some of the old ones that you are trying out anew