Need some opinions and or advice. Prefer first hand experience obviously

Building a house. Have a 9ftx10ft area we will be pouring the ceiling and creating a vault or safe room in basement

12” block walls poured with horizontal and vertical rebar. At door will step to 8” block unless going Fort Knox safe to allow for door. Roof will have a 4x6 I beam with spandeck on top and compuseal gold waterproofing with Np1 caulk. Then concrete. It’s a back patio area on top and covered by roof

Floor will have a drain for dehumidifier to hook up to.

Lights inside. Will also have air flow through hvac at recommendation of a local company that sells safe doors. I think that defeats purpose during fire but they acted like it didn’t

I may put a exhaust fan and not hvac

Here’s the question

Vault door at 9-11g $ for a genuine browning or Fort Knox. They are crazy expensive

Or a 3 point lock steel fire security door with keyed/electronic locks.
Have body shop paint it up fancy and put something like “jinks vault door company” est 2022. Basically lipstick it up some. Under 1800$ total

What say the fire