Playoff rotation help.

ok, finally made the finals in a league, just barely.
going into the finals, I do not have home field. the team I am facing is slightly weaker vs R, and I only have 1 LHP (Harden, [u:c570fd706d]Kazmir[/u:c570fd706d], Sheets, Contreras, Bonser).
now I have Sheets and Harden going 1-2, so they can pitcher games 6 and 7 if necessary, especially since the team is better vs LHP. But he has Ross injured for game 1. A good time to sneak in Kazmir. But then if the series goes more than 5 games, I lose that advantage I gained.
so which way to go..... ?
going into the finals, I do not have home field. the team I am facing is slightly weaker vs R, and I only have 1 LHP (Harden, [u:c570fd706d]Kazmir[/u:c570fd706d], Sheets, Contreras, Bonser).
now I have Sheets and Harden going 1-2, so they can pitcher games 6 and 7 if necessary, especially since the team is better vs LHP. But he has Ross injured for game 1. A good time to sneak in Kazmir. But then if the series goes more than 5 games, I lose that advantage I gained.
so which way to go..... ?