I think the best thing you can do for your team now, is KEEP MANNY!!! The guy is a hitting machine and hasn't gone on one of his torrid hitting streaks yet. Keep him and you'll reap the benefits. I think once Morneau comes back you are all set at 1b.
I would shop Jones, Giles, or Sosa for a decent starter or a stud 2b. Who knows, maybe you could offer jones, sosa and Freel for Soriano. Sounds like a lot to give up, but I'd do it. I'd also shop the waiver wire for some saves. In a 10 team league there might be some there.
Just some thoughts. You have a lot of depth there in the OF, keep manny and use them to get a stud in return.
By the way, I think you should keep Manny. And don't think of trading Ichiro either.