Taxotere is indeed indicated for use in conjunction with Cisplatin but the doctors may use it by itself because of the kidney issues.

5FU (Flouricil) is another chemo agent that has no specific contraindication for the kidneys, however a warning is published in the literature that kidney and liver testing should be routinely performed if using 5FU.

The rash with Erbitux is pretty predicatable and a common side effect.

We all respond differently to treatment and some will find that Taxotere and/or Erbitux intolerable and others won't. You won't really know until the therapy is started. You'll want to make sure that there is adequate monitoring, in the nursing home, to insure that allergic or adverse reactions, should they occur, are dealt with in a timely manner.