10-30-07: Drubin
I was thinking I'd skip the tonearm rewire because you end up having to use an addiitonal phono cable.
You need an additional pair of ICs, but not a phono cable. KAB provides a ground wire, and they sell really excellent, inexpensive Mogami interconnects (as low as $25/2 meters). Don't disregard the Mogami because of the low price. They're excellent. You can always upgrade later if you feel the need.
Also, with the re-wire/RCA jacks, you have the flexibility to run balanced in the future using a RCA>XLR phono cable (it integrates the ground wire). Atma-Sphere sells them for $300.
Frankly, I don't think anything beyond the fluid damper and a moderately good cartridge is required to enjoy vinyl on the SL12XX tables.