Hi Maggotdriver - the 1.67 doesn't apply since you didn't dispatch without antiskid.
I don't see any issues with declaring a PAN for no antiskid in a Jet - it's not just overrun risk but burst tires on landing. We're far to anal in Oz about this sort of thing - "Great landing but can you believe he called PAN?". Hopefully his career will recover hey Capt Fathom?