The BladeForums.com 2024 Traditional Knife is available! Price is $250 ea (shipped within CONUS).
Order here: https://www.bladeforums.com/help/2024-traditional/
I agree, 5" blade is in the right range. Handle should be shaped to be able to work well in a gloved hand and indexable in the dark. I like Stacy's idea of the canvas covered kydex. It will reduce noise/clanking. The sheath should have good versatility in mounting options. The knife needs to have a strong tip as it will get used for prying things like ammo crates open. It will be used as a tool, not as a weapon. A lanyard hole is a must! Weight is a big consideration; don't make a giant knife from 1/4" steel.
Bob