when rename redolog and temp file during db restore? after restore or after recover?

I am restoring and old rman backup in the same server with a different instance name,
I rename datafile with set newname. I don't want to overwrite the original redo and temp. 

RUN

{

set newname for datafile 1 to '/restore/aux/SIADB/datafile/system01.dbf';

set newname for datafile 2 to '/restore/aux/SIADB/datafile/datossiagpsdesa01.dbf';

set newname for datafile 3 to '/restore/aux/SIADB/datafile/sysaux01.dbf';

set newname for datafile 4 to '/restore/aux/SIADB/datafile/undo01.dbf';

set newname for datafile 5 to '/restore/aux/SIADB/datafile/undo02.dbf';
..

set newname for datafile 75 to '/restore/aux/SIADB/datafile/datossiagpsdesa65.dbf';