Wedding is a bitch, not because of the setting but because of the bitching firestorm after the event from the bride. I wonder why you chose D3200 instead of D5100, given that they are more or less at the same price, but its too late now. Yes, get the 55-200 lens if you want to be a stalker. Its not terribly expensive, but a bit fragile. Once you get a DSLR (whichever make and whenever it is made) you are pretty much set for life, the rest is skill polishing. Hell, most good stuff are taken by people who uses the most basic tools because you can learn everything very fast and move on to get composition right instead of worrying about settings. I still cannot get the most out of my compact so I am not going to get a DSLR yet.