Q: Moving files from PC to iMac

Hello All,

I know this has been posted to some degree and I apologize if I missed it.  I am 90% confident my plan will work for me… trouble is the Apple Tech on a call was not sure and had me doing all types of complex steps… I want to keep it simple as Macs are new to me

I am moving my PC files (mainly JPG, RAW, music and movies) from my PC to my new iMac (about 400GB worth). Can you please confirm my plan/logic will work?:

1. Copy my files from my PC to an NTFS external HD (USB3)
2. Connect NTFS external HD to the iMac
3. COPY not MOVE my files from the external HD to the iMac i.e.: at this point the files will be on the external HD and the iMac.
4. Reformat the external HD to Mac OS (journaled)
5. This will do 2 things for me:
   1. Delete all the files I just moved from my PC to the iMac
   2. Set up this X-HD for Time Machine backups from my iMac

Am I missing anything?

Thanks,

Joseph