The exterior of the church may be an integral part of the wedding day coverage. It is not a priority shot, but rather a nice locator and a meaningful transition between the parts of your video.
Do this shot after you have finished setting up inside and right before you go get your next shot, arrival of the bride.
Walk away from the front entrance far enough to get entire building in the frame. Try low angle shot, it often gives buildings a majestic look. Wait until there is no traffic and roll on it for 5 or 6 seconds.
