Perhaps the best benchmark for specifically W NC here is comparing to the Great Flood of 1916, which was the previous flood of record for the area and was caused by back-to-back hurricanes and their inland rainfall. The death toll from that was approximately 80 via most sources I can find. Chatter I've seen from local news outlets echoing first responders indicate this may significantly exceed that.
I don't see 1000 deaths, but I could easily see 200-300 overall, which would make it the deadliest tropical cyclone in the United States aside from Katrina in decades. It already is deadlier in SC than Hugo and is the deadliest in NC likely since the mid-1800s. There are not enough superlatives to describe this event.