Digital BW, The Print

I'm getting ready to purchase UT7 inks for my Epson 4000, but don't
want to buy any more cartrides than is necessary.  If I only want to
print neutral to slightly warm are there any inks that I can leave out
of the UT7 set?  I can do my own profiling with IJC/OPM or QTR if
necessary.

Thanks,
Jason