Just to manage your expectations, I’m passionately in love with my CGM, but I could happily pitch the bloody thing out the window at times. You can see what I think are the pros and cons of it here – https://www.shootuporputup.co.uk/2009/04/to-cgms-or-not-to-cgms/
It has it’s foibles so when you get it, if there’s anything you’re struggling with, it’s worth asking on here (although there aren’t many of us CGM types on here, those who are, are very happy to share what we know) or a brilliant site in Canada which has a lot of CGM users on it – http://www.insulinpumpforums.com . As ever, it’s the hints and tips from people who use it every day that are most useful. Overall though, it’s a fantastic bit of kit.