Hi! For this step?
> 2. Current License(s) - Core is required, future requirements will be accounted for later.
I believe that only the Splunk Enterprise core license size is required & the other fields are optional. Splunk Enterprise Security doesn't have its own physical license, but it requires a Splunk Enterprise license or Splunk Cloud subscription. You just need more like an entitlement term associated with the account to download ES from Splunkbase (is what I last heard in August).
Update to my previous answer... If you're including the ES option, the numbers should match. Whatever volume your license is, use the same number for ES volume.