Back up solution?

[hotinplaya]

I have an iMac with 250GB attached to an external Lacie 500GB mini

on the external drive I keep my iTune library and it is at 380GB (not backed up) and I back up my home folder every week using .Mac back up program, home home folder is at 130GB , so I have run out of storage (20GB available on the Lacie) I also use an AirPort Extreme base "N" to stream to my AppleTV.

Is this a good idea? or can someone suggest something

To purchase an other external Drive of 1TB, partition 500/500, use one halve to back up my iTunes, and the other halve to set up Time Machine for my home folder? and would I want to hook the new drive up to my AirPort Extreme, or daisy chain of my existing lacie.

Since I have a "N" Extreme Base, would there be any reason to purchase the 1TB Time capsule, since even now I am hard wired to the router

 

[krye]

I'd put a 1T or a 750G drive in the iMac and use the free Carbon Copy Cloner to copy your 250G to it. I'd then move all the data from your external 500 to the iMac to keep all your data in one place. I'd then get another 1G drive and put it in the external enclosure and use Time Machine to back up the iMac. You then have an extra 250G for whatever, you can even just eBay it.

Also, don't bother with the Time Capsule unless you plan to sell off the N Base Station, because they will become redundant.

 

[hotinplaya]

Thanks for the advice, but I forgot to add, I will be replacing my iMac with a MacBook Pro in a few months as my main computer (attached to a monitor)

I travel a few times a year, and have used a MacBook, big hassle trying to sync everything.

So I want to keep my iTunes and back up (Time machine ) external

will my solution work?