cigar storage

So I have this old cabinet I found years ago at the local flea market that looks like a jukebox. Originally used it for a liquor cabinet. Then junk storage and now after pricing large humidors I am going to turn it into a humidor. I have been trying to source a sheet of Spanish cedar locally...

My understanding is that whole leaf can and should be aged for years in a fairly dry environment, and the rehydrated prior to rolling to make them workable. Cigars on the other hand must be stored within a certain range of humidity not just because they will be harsh if dry but because flavor...