I agree, but also consider that a bolted safe provides leverage anchor for the thieves when they use a crowbar. A lock only keeps an honest person honest.I have that in my reloading room in CO: open the door and you can shoot from either a covered patio or step further away to get a better idea of the wind at my shooting position. It is awesome to be able to load and then shoot.
You have more room than either of my reloading rooms, but one thing I noticed is it doesn't look like our safe is bolted to the floor; a guide who lives in Tucson said thieves put a steel cable on his safe and pulled it out of his house with a truck - smashing all kinds of walls in the process. Difficult to do from a basement, but if you moved it, so can they.