Activate a non leading ledger

Hello,

General ledger accounting is active since go live(six months ago).We have not active: a)scenarios
in new general ledger(profit center, segment,... .b) spliting.At the moment we want to define and activate a non-leading ledger.

We already sent an email to SAP ( NewGLMigration@sap.com),because for active a non leading ledger requires a migration project: Scenario 7: Subsequent implementation of an additional ledger. In this scenario
SAP performs only technical activities and provides a migration cockpit (reports to execute and so on).

My questions are:

1-We are FI consultants, and we know that create and assign a non leading ledger is easy
and short-time but, do we need any special training for migration? Is it enough
with migration cockpit and following it step by step?

2-We need an opening balance for 2014 with new non leading ledger. Is it possible, after close fiscal
year 2013 in leading ledger ?.The migration could be during fiscal year 2014 but
with an opening balance for 2014?

Additional information:

1-Fixed asset is active in our system, and we have to create a new depreciation area for this
and transfer values.