You won't need all six magazines, just three.
Speaking of magazines, the idpa magazine, "Tactical Journal" can be read online or downloaded as a pdf.
idpa.com - look on the left column of the main page, for all their links.
Click on "About IDPA", for the rule book.
Walt Kelly, alias Pogo, sez:
“Don't take life so serious, son, it ain't nohow permanent.”