I guess an appropriate rack would be different for each party, dependent on climbing styles, experience, etc. We took 10 cams up to a 4 friend, 10 nuts, 3 tri-cams, and a 60m 9.4mm rope.
In hindsight, we could have done without the tri-cams, the extra #4 friend, and could have used our 8.6mm 60m rope since it would have been doubled the whole time.