Digital BW, The Print

I have researched this approach extensively on both Paul's site and 
the MIS site and still have a few questions.

1.  I am assuming that anything working for the 2400/ABW would also 
work on the 4800/ABW (using, of course, proper carts and bulk ink for 
the 4800).
2.  Is the proposal to simply swap out the Epson yellow and replace 
it with the MIS EZWRM yellow and print through the ABW driver 
*without* RIP or curves?  (I am assuming an ICC profile "on top" of 
the ABW driver.)
3.  Am I correct that the MIS ink part number for this procedure is 
the "EZWRM-[quantity]-Y"?
4.  While I know that the cyan is fairly stable and that Paul thinks 
highly of the stability of the Epson magenta, is the removal of the 
Epson yellow that significant in reducing the total amount of color 
ink used by the ABW driver. 

I should add that I have no interest in using the 4800 for color 
work, so the limited gamut of the MIS yellow is not an issue for me.

Many thanks.
Walt