Any tips for copy work?

If you want accurate color rendition then stay away from velvia!!!
I'd say try some ektachrome (the non VC version) or Provia. both are nice.

Also be carefull with the lighting, be sure to use 5000k or be prepared for ugly color casts.
if you can spend some money, this looks nice:
http://www.lowelego.com/

 

Kodak EPR is the standard for accurate colour repro.
I wonder if its still available 

 

I use Ektachrome T64 with Reveal brand light bulbs and an 82B filter and the white balance is spot on to my eye.

And yes, it's available.

 

polarize

A polarizing filter either as gel on the lights or as a filter in front of the lens may help here as well.

Good luck,