It's 3 months and 5 days to the wedding (no, I'm not obsessively counting the days; I set up a countdown feature on our wedding website).
I think that's enough time for the out-of-town folks (which is pretty much everybody), especially because we sent save-the-date cards.
The invitations are a simple postcard with a hand-painted tree and the wedding details on the front and personalized notes from Matt and me on the back. Since finishing the invitations, we have decided to change the ceremony time, which means our invitations have a big fat error on them.
The invitations cost very little to make. We already had tons of water color paper and watercolors. The stamps were only $0.26 each.
Good for the budget and the environment!