'not a cabinet maker' you say? Bah! your work looks great!!
does the box work for one gun, or is this the box you take to the range regardless of what you're going to shoot?
(i used to put it all in one big fishing tackle box, but it then occured to me that i should have one box for each gun, even if it meant carryingn two or three small boxes rather than one huge and heavy one.)
just curious... by all means, do what works best for you.
make good smoke!