Offense looks good. I agree with the above, Ensberg will definitely be a potential blue-chip to trade, maybe for that RP help. If you do get Looper off waivers (which DOES call into question the smarts of your other managers, IMO) and are willing to deal Ensberg, you probably wouldn't have to punt saves at all - you could probably wind up in the middle of the pack save-wise without hurting any of your other categories.
A couple of thoughts about Oritz:
First off, don't dilute his value by offering Ortiz in a 3-for-1 deal for Sexson right off the bat. Play a little hard to get with him. If the guy who owns Sexson isn't biting, go after Giambi, Thome, Delgado, or Lee. You should be able to get one of those guys in a 2-for-1 or 2-for-2 deal. That being said...
If push comes to shove, I'd do a 3-for-2, maybe even a 3-for-1 deal to get one of those top 1B. Ortiz will PROBABLY never be valued as highly as he his right now. His 2nd half was killer, but his first half was nothing special, and that second half was really the first time he's ever produced like that.
Look at it this way: If your 1B is giving you a .290/30/100 line, then you're only treading water at the position. That's what Ortiz gave you last year, and that was very possibly a career year for him. Get the surer thing if you can.