We are about to upgrade to ZEN 6.5. I need some feedback on a proper upgrade path.

I currently am running ZEN 3.2sp3 on NW5.1sp8 with eDir My plan is to eventually run ZEN on a new NW6.5sp3 server that has been added to our environment.

Would the best course of action be to upgrade ZEN3.2sp3 on the NW5.1 box to ZEN6.5 and then install ZEN6.5 on the NW6.5 server? - OR - Install ZEN3.2sp3 on the NW6.5 server on then upgrade to ZEN6.5 on the NW6.5 server?

All servers are running eDir

Thanks in advance for any replies.