Depends. If Roger can pick up 1000 points here, he'll be at 8200, and Nadal won't be able to catch him until Wimbly.
I've got no real worries that Roger isn't beating the Sampras record. I went on record right after the AO stating that Federer would definitely beat the record. This thread is enjoyable, I love the speculation and the calculations, but really, Federer has got this record in the bag barring absolutely freakish results.