well mate congrats on ur go pro your gonna love it!!
1st thing first its easy to get confused with the controlls is it on or not :
is it recording...?
so first thing is first u want an LCD screen
2nd the battery does not last long (however i dont beleive u can have more than 1 accessory plugged in at a time.) so, easy solution as u have it mounted on your windscreen it does not need to be water proof so u can buy a cable and plug it into your cigarette lighter plug.
you now have 1920x1080PHD video with a display screen and long battery life.
make sure you go into the options and set the resolution as mine was not on max.
720P HD is plenty especially if your uploading to you tube also it has a faster frame rate.