Digital BW, The Print

I am considering the possibility of getting a 7600 rather than a 2200 
because I  would like to make mainly 16x24 inch prints, and sometimes 
would like to print at 22x33 inch size, which I suppose is the largest 
print from a full-frame 35mm negative that can be made with this 
printer.

As I intend to print only one matte paper, I am not worried by the loss 
of 1/4 of the ink in the cartridges when switching between the two 
types of black inks when changing between glossy and matte paper. But 
are there any other problems with this printer?

I was intending to use the ImagePrint RIP for color and B&W. What are 
the thoughts on this?

--Mitch