Jon, if you ever decide to send out for prints, you might try MPIX. I learned about them at a recent Photoshop World. Flat out beautiful prints, fast and relatively inexpensive. In fact I have some hanging in a small local museum show as we speak. Might ask for their paper spec swatches if they’ll mail them out? Haven’t quite personally figured out how to use their metallic paper, but it flat out pops!
The only caveat is you can’t mix b&w and color within a single order. THAT I learned the hard way. Best of luck with your new venture.