Upload of BC Sets of SAP Best Practices in SAP

HI

We are in the process of uploading the best practices configuration BC sets provided by SAP. We have the following doubts

1) The BC sets will have default values (ie) Company code-001 etc. But the client requirment would be to create Company Code 1000. Whether this exersise to be done manually (or) is there any alternative method that SAP provides.

2) The Client requirement is to apply the BC Set configurations provided by SAP Best Practices. What are the precautions to be taken to do this?

Kindly advise

Cheers

V.Krishnan