external hard drive set-up

Hi all,

I have an iMac (Intel) with a 1T Seagate external HD, connected by firewire 400, running Tiger (10.4.11). I just purchased a 3T LaCie external. I've daisy chained the 3T off of the 1T. My question is what do I do now? Should I partition the 3T drive? If I do, how many partitions, 3, more, less? Also what settings should I use. If it matters, I plan to use it to edit FCE projects. Any and all advise is greatly appreciated.

Also, is there anything else I should do or know that I'm not asking about?

cheers,

Jack