Enjoy the excitement of it all. Do your premarital classes, and consider couples counseling (not that you are having problems, it just tend to help teach you ways to deal with them)
Check you church's guide lines on flowers. Only do real ones where you have to. I actually made all my own flowers. We saved a TON of money, and since our wedding was at Christmas time the garland, and sprays we used decorate my house during the holidays. Also watch Michaels and Hobby Lobby, they both frequently run their fake flowers on 1/2 sales. We had a party at my mom's house to make them all and people came in and out all day it was a blast. Added bonus that we get to remeber our wedding each time we put them up.
We also printed and made our own invitations, by buying the parts at a local specialty paper store and doing the rest ourselves. Again huge money saver.
The one thing we did spend money and not scimp on was the photographer. It was worth it to have the amazing pictures he shot. He and his assistant were evenrywhere and caught everything, yet no one even noticed them. We did skip the professional videographer. We ahd a friend video from the choir loft, and our photographer put together a DVD with our wedding songs and pictures on them and it was plenty. Another note on photography, if your church has stained glass windows let your photographer know in advance so they can check out the light through them at times similar to your wedding. Our church has AMAZING windows, which looked beautiful during the service but had turned black with the evening afterwards during pictures. Our photographer shot a tone of shots before the service and simply "fixed" the last pictures of just my husband and I infront of the the windows.
Also approach the whole thing with the attitude that it is going to be simple and drama free, and that on the "big day" something is bound to go wrong......that way you aren't freaked out when it does, and are pleasantly surprised if nothing major happens.
Depending on what season you are getting married it can be advantageous to book the reception hall first then the church......or vice versa. Since we got married at the holidays the church wasn't an issue as their aren't many wedding then......however the reception was a different matter as there are lots of holiday parties at that time. Just be aware.
I'm going to disagree with the age old advice to not go to bed angry. Several times in my marriage my husband and I have gotten into arguments late at night and they were compounded by the fact we were both overly tired, so we just kept going in circles and getting angrier and angrier. After sleeping on it, we were a lot more rational and able to actually get to the bottom of the issue and solve it.