Will you be doing this with PSA lam or Hot lam?  We produce these graphics on our aqueous printer with hot lam using a 5 mil lam, a 10 mil backer and a 5 mil display film that its printed on.  Works out to be a great product and Lexjet has similar PSA products for doing this as well.  If on aqueous they have a clear textured film that you can reverse print on and then put on a psa backer.  Tested it, printed great, but stayed with the hot lam procedure.
Jim