Go for it he goat ! Now that the decision has been made...don't look back or second guess yourself. Keep your nose pointed in the direction you want to go and you'll be alright. Sounds like you've got the toughest bit sorted out...the job. Good for you ! By this time next year you'll have carved out a happy little routine for yourself and your family and will be glad you're out of the gloom and drizzle.
I'm heading to Brisbane via Hawaii on th 15th, I'll be sending you guys good thoughts that day.