What is Henri Crockett's highest overall with more than 3 picks?
CREATE TABLE "atlanta_falcons_draft_history" (
  "round" real,
  "pick_num" real,
  "overall" real,
  "name" text,
  "position" text,
  "college" text
);
SELECT MAX("overall") FROM "atlanta_falcons_draft_history" WHERE "pick_num">3 AND "name"='henri crockett';