Mmm depends on how many criteria there are hun - I know in Victoria for teaching jobs most jobs have around 5 criteria and addressing them are nearly one page per criteria. I would thin half a page per criteria for an SSo position. Am happy to email my most recent one so you can see how I set it out but bascially becasue you have to upload it through the DEECD site (it wont be anywhere near 2MB) I set it out with cover letter followed by cv then criteria all on one word document as in Vic you can only upload the one file - so I set it out like they will print it off ITMS. Good luck!