1
What about Nick Johnson for 4 years? You could have the top 3 looking like this:
1. Ichiro
2. Nick Johnson(suddenly you have a Olerud type 1B again)
3. Branyan
And suddenly the top of the seattle's lineup look pretty scary. Maybe you could also add lopez in 3 and move Branyan to 4. Although another option is try to acquire dallas mcpherson from the giants(if his back isn't still broken).