been thinking of moving mine to the outdoor underground storm cellar to eliminate future discussions :;0/ I don't have near as much as you - mine in a 48qt coolidor with silica sand beads that have worked wonders here in Arkansas.
Plenty cool, just don't want an infestation of spiders and bugs thou.
Your look good to me - if it works you it and expand. Who are we to talk harsh about your setup if it works. Go Go Go. Enjoy Enjoy Enjoy I say.
You appear to be a good organizer.