Help with wine for wedding

[newbie74]

Hi there, my fiance an I are getting married at the end of July and would like some help chosing the right wines. I have some very stuffy old relatives who arewine buffs on my side family, and not wanting to let the side down I'm putting out a plea for help.

The menu is as follows:

Starter
smoked Salmon and asparagus bavarois
Main
Lamb shank with parmesan mash and rosemary jus
Desert
white, milk and dark choclate torte with a mano coulis and caramelised peach.

Not sure if to serve desert wines or move straight onto the champagne.

I'm planning to go over to France to buy the wines and spend a couple of days tasting. Just so I find the right one ;-)