I need to be able to make 200 copies of a DVD within the next week. I am looking at adding three DRX 510 ULX to my DRX 500 ULX, all running firewire. PC = athalon 1.2 ghz 1 gig RAM 100 gig on ide storage drive Record Now MAx two, sometimes 3 Lacie Silver 200 gig hard drives in te chain already/