Digital BW, The Print

I just picked up an Epson 7600.  It's had very little use, but it
hasn't been used in a few years.  Thus, I'm sure there's lots of gunk
in the print lines, dampers and heads.  I'd like to use the printer
with a BW inkset, or, if worse comes to worse, as a way to apply glop
to prints made on another machine. (I also have an Epson 4880.)  I
have a set of refillable cartridges for the 4880 filled with cleaning
solution.  Perhaps these might work in the 7600?

Before doing that, though, would it make sense to replace the ink
lines and/or the dampers?  On the face of it, it would seem best to
avoid trying to dissolve everything in them and running it through the
heads.  Should anything else be replaced before starting it up? Any
other tips? I do have the service manual.

Regards,
Peter