Check out alt.wedding and soc.couples.wedding I did a lot of lurking there when planning my wedding. You've got the big things down... don't sweat the details.
Don't forget the invitations, reply cards, and program. For my wedding, I bought some great stationery at an arts and crafts supply store, designed them myself, and printed them on my laser printer, and they looked very professional
For the envelopes, I did the calligraphy by hand.