Looks OK to me but I've never tapped 18-8, just 300-400 series. Seems like a really high feed for the drill. You don't need to put the M3 S1000 where you usually put it. It should go on the same line as the G84. The controller will just stop it and restart it when it gets to the G84. Saves a tiny bit of time. Doesn't hurt to have it up there though.
Don't forget the long lead of the tap so you'll have to go a lot deeper. And make that GOO a G00 (OK, I knew you knew that).
If the threads aren't formed enough, you may have to increase your RPM (and matching feed rate) to get it to flow properly.
Are you manually putting tapping fluid on or are you missing the M8?
I don't see anything else but I miss things all the time.
Good luck and tell us how it worked.