Right on =) I got all new sand. I wanted the larger grain so it's easier to clean I transfered some of my old rock due to biopsies and dried the rest. I cooked and cycled most of the rock that came with the tank in a Brute for about 4 months with choice rock from my other 2 systems. The setup I bought was relatively young but the dude was an idiot and it was covered in Hair algae and turf.
Literally all I kept out of the purchase was the tank, rock and the blonde naso that I have to get rid of =)..