Using RG Source Control when deploying multiple copies with slight differences (IDENTITY)

So, I have a database schema.  The code (procs and functions) are all identical.  No problem there.

The tables all have identical columns and indexes.  But, they have different identity column initial defaults.  

Example... I have the following:

CREATE TABLE XXX
(
INT ID PRIMARY KEY CLUSTERED IDENTITY(10000, 1)
...
)

But, when I deploy the next 10 copies of the database, I need different initial IDENTITY values.  

Is this something I can handle or work with using Red Gate Source Control?  Or with another tool?  Or does it require a base deploy and then a custom script to update those values?

(Yes... I know there are better ways than the changing IDENTITY column, but I'm stuck with it at the moment)

Thanks,

Marc