CREATE TABLE table_39404 ("Round" FLOAT, "Pick #" FLOAT, "Overall" FLOAT, "Name" TEXT, "Position" TEXT, "College" TEXT)

Which Overall is the highest one that has a Name of daimon shelton, and a Round larger than 6?
SELECT MAX("Overall") FROM table_39404 WHERE "Name" = 'daimon shelton' AND "Round" > '6'
SELECT MAX("Overall") FROM "table_39404" WHERE "Name" = 'daimon shelton' AND "Round" > '6'