Hello JWOODS98,
Welcome to the forum.
There isn't any means within Hauptwerk currently to add latency to division/keyboard/rank MIDI output, I'm afraid, but I've logged as an enhancement request that you'd like it to have that ability.
You'd potentially need to use some external hardware or software to do that currently. Perhaps some MIDI utility hardware device exists that can delay MIDI messages by a user-specified amount, or perhaps something like Bome's MIDI Translator or MIDI-OX (both software) have that ability, but I don't know.
(The length of your MIDI or USB keyboards won't make any audible difference, since electricity travels through wires at almost the speed of light.)