#1 - 3 are very good, but I find #4 and 5 to be compositionally weak and not particularly compelling. While #4 tells a story, it doesn't necessarily tell one in the same vein as the event itself; and #5 doesn't really say much of anything at all for me. The first three shots are definitely the most powerful. It's not that every shot has to be a G&G shot, but clearly this is where your eye is most attuned to the photographic process and you should capitalize on that. It is when you capture the joy and intimacy of the occasion that the image truly shines, as you have done here.
Wedding photography is insanely tricky, because it's like street, event, portrait, low-light, and landscape all rolled into one, with maybe a few macros thrown in if you want to get ring shots. And then you have to deal with the social complexities of wedding etiquette, potentially psycho clients and their equally psycho relatives and guests...and too much wine...and so that's why I don't do weddings. I'd burn out.
So I'd say that you should practice developing your street and environmental portraiture skills, which will translate well to doing weddings.
Oh, and I'd suggest for #1, crop just below what appears to be a power line in the background, or clone it out. 
