It’s a bit unfortunate only 4x ports support 24V. If you’re trying to feed a tower full of 3000L horns, this isn’t going to work.
My suggestion would be:
Port 1-2: 48V and 48VH (4 pair)
Port 3-8: 48V and 24V
Having read your pin-out information, I can understand why you didn’t combine 48V/48VH/24V but I don’t quite understand why Port 1-2 in this model didn’t include the 24V option.