System Setup

I'm at the point where cable upgrades are called for. However, if I change the setup, it may change the length requirements. Right now I have the components in a rack with the cd on top, followed by the preamp and finally amp. A video dvd player resides near the bottom. With this set up, I need no more than .5m to 1m interconnects, which helps keep the cost down. Should I keep it like this or is there a better way?