WRT the freeplay alternate camera: there's nothing wrong with using it on one or two angles in a fitting enough situation, but it is certainly not the kind of thing you want used throughout the entire video. Actually, I think that applies to all freeplay features in general. (except weather/time and *sometimes* frozen angles)
For starters I would definitely recommend you stay clear of it, though. The editing was nice, but I think it could have looked even better with regular camera work.