Did the neuropsych give you a referral for an auditory processing eval? It sounds like that will be the next step - as well as thinking through how that impacted the test scores.
FWIW, when our kids had neuropsych evaluations they lasted at least 6 hours and spanned most of the day. The WISC part of the testing didn't take long, but they also had achievement testing and other tests to assess executive function / visual-motor integration / fine motor skills etc (partially depending on what showed up on the IQ testing).
Will you be going back for a follow-up parent meeting once you have the full report from the neuropsych? When you do, ask specifically how each challenge (CAPD, dysgraphia, dyslexia) impacts your ds and what type of testing (and where you can get it) can help you better define what specifically is causing each or how the challenges impact your ds.
Also post the scaled scores for us once you have them. I don't know enough about raw scores to be able to tell anything from them.
Best wishes,
polarbear
