Hi oshy,
welcome to LP101! Please get used to use the "search" button before you post. (You question actually has been answered a bazillion of times

)
You should also read through the FAQ as most of your questions will be covered there. You can find the FAQ at:
http://www.lockpicking101.com/viewforum.php?f=2
If you are not familiar to lockpicking I'd suggest to read the "MIT guide to lockpicking". Google is your friend
The animations at HowStuffWorks should proof useful too.
http://home.howstuffworks.com/lock-picking.htm
To answer your actual question:
The 9 pice set from southord should be fine for you. I'd suggest to have a look at a similar sized one from peterson thou. (go with the "Just picks" sets)
http://www.peterson-international.com/picksets-detailed.htm#Plastic
You might als consider making you own picks. There are tons of templates and photos for inspiration on this forum.
happy picking!