"Wood Outgassing" - What Should I Know?

My father will be making it. Here's his website for reference: http://www.t-gwoodproducts.com/id1.html I doubt he'll have a problem sealing up the whole thing. I'm not paying for it though so we'll see. xD I could likely buy the hardware required and provide it to him (drawer sliders, hinges, locking assembly, etc.).

I think this horizontal chest will be more functional than one of the sheet metal safes in my situation. It will blend in as furniture and provide essentially the same amount of "safety". I'd like to have it in three tiers. The middle tier will have the gun rack. The top tier will cover the guns with removable trays that will hold odds and ends, be it blankets to be extra tricky or ammo and whatnot. The drawers will house my coin collection. I'm going to try to come up with a concealed locking mechanism so that it's not obvious that I have it locked up. It won't be a heavy duty lock, but it will hold it tight to make it appear as if it's a big heavy coffee table with nothing in it. I don't have kids and I live in a very safe area so really it's for peace of mind more than anything.

If I end up putting this thing against a wall/bed it would be cool to have a pocket built into the back side of the chest where the drawers are with a piece of wood to conceal it. Then when I'm rich and famous I could hide my MS68 Peace dollars in the back for ultimate security and not have to mess with things like safety deposit boxes! :D

I think you have a great idea. I also think your coins will be okay if you put them in separate, sealed containers (with some desiccants) and then put those containers in the drawers.

Starting to sound like a buisness venture of gun/coin cabinets/coffee tables/end tables, etc.
What I think I like about all this is you don't have to have a safe, a safe that invites crime, a secret wall that opens, etc. Just something right in plain sight.