Build a cinderblock shell vault, reinforced with rebar and concrete fill. Add a double stud wall inside and out with 4 layers of 1/2 inch drywall to fireproof it. Then add two liberty safe “doors” doors to the vault’s foyer with a 8hr fire door covering the “exterior” safe door in the foyer.
Fill the vault with additional gun safes and HilTi bolt those to the floor and weld the safes together, then drill and bolt together with grade 8’s from the insides of each safe........ alarm the hell out of the approach to the room and interior of the room, each door in the foyer with sequencing types of sensors to preclude surreptitious bypass . Hard line your alarm system wiring in conduit. Every connection / junction box has poor boy tampers on each screw / fastener made from “glitter” fingernail polish. After it dries the pattern is like a fingerprint. Take close up photos and store em and compare if false positive alarms occur ........
Do ALL the work yourself or the contract labor or someone they tell about your Ft Knox will visit later .
Never have your safes delivered, pick up the safes before dark and make sure your not followed home by bandits . Even be careful renting a pallet jack / heavy mover etcetera to move the heavy safes. Don’t unload in daylight ...... thru a closed garage if possible.
Anything less is gift wrap for theft and or fire at some point in time...... go big or get a HiPoint ........
Stay Safe.
I don’t think I want to live where you live.
Fort Knox!
So that would cost how much?
$10,000 to $25,000?