Database Software

Hi Guys,
We have a 10gr2 database(P1) on solaris 8. We want to move to a new server running on solaris 10.

This is what we are planning to do:
-Setup a standby(S1) on new solaris 10 server in advance
-Let the logs move/apply on S1 for a few days
-Do a manual switchover on the move day so S1 is the new Production(P2) now
-Keep the old primary(P1) as new standby(S2)
-If any major issues after switchover then revert back to old Primary using another switchover from P2 to S2

I tries looking around everywhere but did not find anything which could provide me steps for last 2 action items. We can use rolling upgrade methodology but for that we have to use a logicla standby database(thereby limiting some data types).

Is their a way to use physical standby configuration to do a switchover and then(if needed) another swichover back to the original primary.

We are not using flashback.

Any help would be appreciated.

Thanks.