been said before:
drop the 1400 series.
get the 4800 series.
the advantages are HUGE for a relatively tiny change -
roll media (huge time saver, larger print area, less waste)
can easily handle using the multiblack function to run ONE color as a GOOD black ink (Accuink) and cleaner in the others. large empty chipped tanks (my preference) or one of the cobra systems.
print quality MUCH better and MUCH more control (we run 720x720 (15/full strength ink deposit) for anything without halftones, 1440x2880 for anything with halftones - the 1440x2880 is FANTASTIC but uses more ink and is MUCH slower to print).
i stole this from pierre (excepting the RIP we use).
take the time to set up the gain curve.
if you really want to you can control the stretch gain as well - but we don't trust it and simply print everything off in the SAME direction to avoid the stretch issue/keep it in the same direction/amount.
it's really set it and forget it, good output, possibly even cheaper than any 1400 based system for the ink costs. way better print using ONE head rather than needing multiples to get the ink density where you need it leading to scattering.