Don't buy Chocobo Racing. I had a downloaded version of it, and it was all well and good but it got boring after awhile and was too easy to complete.

If you were to get FFXI, get the PC version. That way you don't have to buy a harddrive for your PS2 and you don't have to scavage around for the COP expansion (as they are going to discontinue it on the PS2).