I did this myself, though I don't know that I'd be much help on the quantities since our celebration was a week long so we had to brew a ton. How much do you know about the drinking habits of your guests? My family likes to drink and most of them are beer snobs so I brewed a lot of IPA, a tiny bit of stout (we were also summer) and some red and wheat. The wheat was surprisingly popular and we ran out early. If you're in an area that gets hot in the summer then lean heavily on the lighter beers.
For the wine, get started ASAP! The first time we brewed wine was for the wedding. Maybe not a great idea but it worked out. Wine takes a lot longer than beer. We had to have all of our wines at least started before the first one was ready which made us very nervous.
Again, lean towards more white since it's summer and more people will want something light and refreshing. DO NOT buy the cheap **** on this. Seriously. The single step up from the bottom makes a dramatic difference in taste and especially body. I'd say for your wedding don't waste your time with a kit that costs less than $100. If you can get something with skins that helps even more.
Luckily you have plenty of time but get started on those wines now. Here's the rough schedule I'd use. Brew reds, then whites then dark beer (if any), then any reds or wheats then finally the IPA's in the last months. Good luck!