Digital BW, The Print

I found a new Epson R220 at a Ritz Camera here in town and picked it
up last Friday. My MIS inks showed up yesterday and I did a BO print
of a waterfalll that looks just great. I had been using a C86 with the
neutral inks and the full ink prints looked a little on the cool side
to me and the BO prints had slight horizontal banding. So I was
looking for a R220 and when I found it I ordered the R2W warm inkset. 

The warm inkset print is way too warm for my tastes so I may order the
correct neutral inks so I can to variable tone printing. OR I could
just do BO printing which was my plan from the start. The BO print is
on EEM and looks great but is just a bit too warm for my tastes. Is
there a cooler mat paper so I can stick with BO printing. The BO print
seems to glow and I really like the look. I'm just wondering if anyone
has a recommendation for a slightly cool, a neutral paper and a
slightly warm archival paper. That way I can stick with BO printing
and use the paper to control the tone.

Thanks,

Scott