I'll do a lineup...
Assuming Hamilton is healthy enough:
1: Calhoun RF
2: Trout CF
3. Pujols 1B/DH
4: Hamilton LF
5. Kendrick 2B
6. Freese 3B
7. Aybar SS
8. Cron DH/1B
9. Ianetta C
Bench:
Cowgill
Conger
Navarro
Beckham
Rotation:
1. Weaver
2. Shoemaker
3. Wilson
4. Santiago *if 4th starter is needed; if not he's in bullpen
Bullpen:
Street
Smith
Jepsen
Grili
Salas
Morin
Rasmus
Thatcher
In regards to McDonald, they'll probably still have him (and a number of other guys) around the club even if they're not on the playoff roster. Just because you're not on the roster, doesn't mean you're not a part of the team.