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_7389 ( "Player" text, "Club" text, "League" real, "FA Cup" real, "FA Trophy" real, "League Cup" real, "Total" real )

### Question ###
What is the sum of FA cups of club Stalybridge Celtic, which has more than 0 FA trophies and a total less than 20?

### Accurate SQL ###

SELECT SUM("FA Cup") FROM table_7389 WHERE "FA Trophy" > '0' AND "Club" = 'stalybridge celtic' AND "Total" < '20'