I don't have Dashboard size actually, but i send you this idea to organize the Deluxe storage =).
I know we ll have only card, dice tokens and omphalos in the official one.
But why not put only dashboard and activation card in this one ? we could put tokens, dice, omphalos, AW card and O card in another box or on the table.
On this picture i put dashboard verticaly too and the corresponding cards are on the side. For the rest you can understand i think =).
I put all in a 300x300 mm square.
Im waiting for the right dashboard size to try better config and check if all hold in the box =).
Im also aware we can't close the box with vertical dash, but this box is not suppose to be close ! she must be a ready to play box !
Btw, all dashboard got clip on !