He would not accomplish the future ones apart from His "death and resurrection" having taken place/been accomplished.
This helps clarify for me that at least you believe that the 6 things in Daniel 9: 24 cannot be accomplished apart from the cross.
So in the OT priestly duties, some [re: "atonement"] were accomplished IN THE TEMPLE (i.e. on the day of Atonement), whereas others [re: atonement] were accomplished by the priest going OUTSIDE of and far from the temple, to where the "lepers" were, and were in need of "cleansing" ('make atonement for'), and not on that one particular date alone.
You are making a category error. You are trying to say that because the priest went "OUTSIDE AND FAR FROM THE TEMPLE TO CLEANSE THE LEPERS" that this is why Jesus had to be crucified "OUTSIDE THE 70 WEEKS TIME FRAME".
That is a logical fallacy and the two have nothing to do with each other. If you want to keep believing the 70th week is in the future that is up to you. I tried my best to show you from Daniel 9: 24 that Christ already fulfilled those things in the 70th week.
There is no future week, or 7-year treaty between the antichrist and Israel and Daniel 9: 24 proves that.