By way of thanks I offer pictures of this crazy job. I ended up having to run a hose into my house to soak the dryset quickerete. I don’t care what anyone says I’m not mixing cement in my house. The whole slab is supported on top of 2" floor insulation on top of a leveled bed of crusher dust.
Addition photos in comments


Power to you, but wow I cannot imagine taking a cold room and turning it into something not nearly as cool.
Young kids and I need the space for stuff other than storing potatoes unfortunately.
The floor changes nothing though, and it’s a billion times better now. Nothing stopping me in future ripping all the insulation out. Venting it to the outside again
Did you catch it? Not as cool? Huh? Huh?