Set aside plenty of time before your first flight to charge up the batteries and do software updates. They take quite a while.
Once it's all good to go, leave her out of sport mode for a while until you get used to it. On your first few flights get used to the return home settings. Signal drop outs happen, so make sure you know what'll happen. You'll crap yourself the first time otherwise.
i went with the combo deal also so i'll have 3 batterys, not even sure if i can charge the 3 of them at the same time, but guess i can get the batterys charging while i update the unit itself, i take it i won't be testing it Friday evening by the sounds of it!