Hello,
I would suggest to install new DR system using backup restore method where restore production backup on DR system and put it in recovery mode in order to apply archive log files from production system. This way you can avoid manual process to change hostname etc. If you will use installation media of production system release then there will be no inconsistency.
It depends upon organization requirement whether you want to install DR as MSCS cluster or simple install. If you want to do simple install then now quorum disk etc. are required.
Thanks,
Sunny