I think figs will do as far as Raleigh, maybe farther. Even if they die back to the ground because of the cold, a lot of times they will sprout back up. Not sure how cold it has to get to kill them dead.
The lettuce should be fine. :) Ours in the greenhouse is looking good. We sow it thick, and then thin it out and transplant the thinnings. We do green ice, iceberg, romaine, red sails, ruby, buttercrunch. Most of them go to seed quick here anyway. The iceberg won’t head—most people crop it like collards.
They're calling for rain tonight, so that'll be nice. I hope to be eating salad by mid-March.