I'm unsure how you plan to join the sideboards to the headboard and footboard, but I would consider the use of lag bolts (probably with countersunk heads for aesthetics) rather than dowels for those joints, as memory foam mattresses can be rather heavy. I have one on our bed, a California King, and it's pretty much dead weight.
The addition of a support leg about half way down the side boards supporting the mattress might be a good idea, too, for the same reason, to prevent the mattress from eventually creating a "sway" in the sideboards.
I do like the design with overhead shelving and underbed storage as a space saver, though!
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The addition of a support leg about half way down the side boards supporting the mattress might be a good idea, too, for the same reason, to prevent the mattress from eventually creating a "sway" in the sideboards.
I do like the design with overhead shelving and underbed storage as a space saver, though!
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