Digital BW, The Print

Hello,

I need help making sure I'm doing the right thing (done as much searching archives as I can 
stand). Here is where I'm at:

Epson 2200
Piezography NT7 inks
Harrington RIP

I'm looking for a semi-gloss with a high D-Max and clean whites. Not sure if I'm for or 
against a brightener. I'll be selling these unmounted so I'd like a thicker paper.

Thoughts? Warnings?

--Darin