Digital BW, The Print

I was directed to this group from a posting I did at 
largeformatphotography.info's forum.  Glad to have found you folks!

I have recently purchased the Epson 4800 printer for use primarily 
to print fine art B&W images. 
Given: All of my work is shot in 2 ¼ or 4x5 negative, then scanned 
at 8,000 lines on my Howtek 8000 line drum scanner. I then take the 
scanned file into CS2 and drop the res to a working res of 4,000 
lines for the 4x5 images and leave it at 8,000 lines for 2 ¼. The 8K 
file is then archived. 

After CS2 clean up and any burn/dodge is done to the working file, I 
then drop the 4K working resolution to 720 dpi from printing on the 
4800. My CS2 settings are with Red River profiles loaded, printer 
output is set to Black Point Compensation –On, Premium Photo Glossy 
paper, 2880 DPI, High Speed Off. The set up is for CS2 to manage the 
printer. 

I've been partial to glossy paper as it has a similar look to the 
Oriental Seagul that I used to use when printing with an enlarger, 
but I have been told that I should be working on matt papers if I 
expect to get into any gallaries, which is my goal! Paper I'm 
currently printing on is the Red River UltraPro Gloss. 

I have no problem dedicating my 4800 to strictly B&W work, if that 
will produce a better print.

My Mission: Exchanging of printing set up techniques with other 
users of the Epson 4800 doing B&W fine art work. 

I would like to hear what others with the Epson 4800 have found to 
be their optimum techniques used to generate the best looking print. 
To my knowledge, nobody is making a set of B&W inks for the 4800 
that would go beyond what the defaults inks are from Epson. 

Any suggestions on refining my printing technique would be 
appreciated. Thanks, Jack