CREATE TABLE table_name_30 (overall INTEGER, name VARCHAR(255), pick__number VARCHAR(255), round VARCHAR(255))
Which Overall is the average one that has a Pick # larger than 7, and a Round larger than 4, and a Name of glen howe?
    
SQL: SELECT AVG(overall) FROM table_name_30 WHERE pick__number > 7 AND round > 4 AND name = "glen howe"