Database cloning using Full Expdp and Impdp

hi,

I would like to clone the database using expdp/impdp ( as per the client request)

I need to export entire database from "source" and import to another host (target) ,where same database name already exists. (but few schemas does not exist on target and I want to override all user schemas, there are more than 20 schemas).  I have SQL user  with SYSADMIN privilege on both the databases.

Can I use the following steps:

full export:  (on source)

          expdp  <user>/<pwd> dumpfile=full_export.dmp logfile=full_export_log.log directory=dmpdir  full=yes

Import:  (on target)

        impdb <user>/<pwd> dumpfile=full_export.dmp  logfile=full_import_log.log directory=dmpdir  full=yes ignore=YES