Data Migration using Transactional Replication

I need to move my database servers from one location to another. The issue is that I have over 200 databases to move and my clients can't afford a downtime. The collective volume of all the databases is over 2.5 TB and growing.

I am thinking to copy these databases in batches over the WAN to the new location and replicate them using Transactional replication till I have all the databases moved and synchronized.

Will it be wise enough to use replication for synchronizing 200 databases or is there a better approach which I can use to move these databases with minimum downtime and compromise on performance of applications.

Note: Migration is from SQL Server 2000 to SQL Server 2005.

Thanks in advance.

Riteshi do not think replication is going to be easy and effective solution for 200 DB with 2.5 TB. replication has its own set of rules, issues and overheads. better move a few db at a time (backup/restore or detach/attach) and then point the application using those databases to the new db server.