Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_30 (pick INTEGER, name VARCHAR, overall VARCHAR)

### Question ###
What is the lowest draft pick number for mark doak who had an overall pick smaller than 147?

### Accurate SQL ###

SELECT MIN(pick) FROM table_name_30 WHERE name = "mark doak" AND overall < 147