That is nice Pappy! I'm in the process of planning out a build that will be similar and I'm torn between keeping the platform permanently lower or make it so it adjusts. Other than room for an annex, any big benefit over raising it up?
Also, for your lid, is it on hings or permanently attached? If permanent, do you have drawer slides? I'm currently trying to source a low cost drawer slide system. The 48" and larger heavy duty ones are pricey!