Running stored proc on very large database

I process 30 days of data daily. To do so I run a stored procedure. On
average, it takes about 6 to 7 minutes to run.
I want to run this from a Delphi app. When I fire off the stored proc it
times out. The default command is set to 30 seconds.

Should I jst set this to some huge value such as 6000?

Thanks

Delphi 2006
MS/SQL 2005


.