CREATE TABLE table_name_43 (pick__number INTEGER, reg_gp VARCHAR, rd__number VARCHAR, player VARCHAR)
What is the highest Pick number that had a road number that was less than 6, featured Bob Dailey as a player, and which had a Reg GP bigger than 257?
SELECT MAX(pick__number) FROM table_name_43 WHERE rd__number < 6 AND player = "bob dailey" AND reg_gp > 257