Playoff lineup suggestions being taken now

Ok so I am in the playoffs of my NL only league and have a few lineup options.  Pitching is not really able to be changed but there is some batting line up issues that can be addressed.  Here's my line up-

C: Doumit

1b- Ike Davis

2. McGehee

3b: Aramis Ramirez

SS: Furcal

OF: Holliday

OF: Soriano

OF: Drew Stubbs

U: Chris Johnson

I have Lance Berkman, Kung Fu Panda and Nate McLouth on the bench.  I chose to site McLouth because he is facing 2 lefties in his 6 games next week and he's been sitting vs LHP.  His RHP includes games against Oswalt and Halladay.  Not a good week of match-ups for Nate.  Berkman and Kung Fu have been fodder the past month.  I can pick up Ryan Ludwick and stick him in the outfield in place of Soriano.  Or I could pick up Ludwick and put him at Utility and have Johnson replace Aramis.  The Cubs are home all week but I'm not sure how many at bats Aramis wil get, or if he will produce.  The Cubs face a slew of difficult pitchers this week but they are at home both series and there's always a chance Soriano and or Aramis could get hot, or just lucky and pop a long one or two.  So my issue is whether to pick up Ludwick and, if so, who to sit- Aramis or Soriano.  Ludwick usually hits his homers in bunches and I think he may have one last run left in him this month.  His games are at LA and home against the Reds.

Then there's Mike Morse who's available.  He's even across the board split-wise : home/away; left/right.  Not sure what sort of playing time he's looking at though although I suspect the Nats are giving him a long look for next year.  He has seven games scheduled next week- all at home, four against Houston followed by Atlanta.  Hell I should dump both Soriano and Aramis and start Ludwick and Morse.  Maybe not.  

Any ideas?