Copying company in to new client and archiving previous data

Hello Experts,

We are looking for a fast solution to copy an entire company with all its configuration in to a new client while deleting or archiving all transactional data in order to start transactions from scratch. We now an archivng project make take 24 weeks to set up at minimum but we would like to know if there is any simpler way to do this, we are not interested in retrieving the archived information in the future, we only want to delete it from the new system.

Any information will be very helpful.

Thanks in advance

Ernesto