Regardless of what you choose you may want to concentrate on the medium level rings so your guests do not have trouble with cutting.
ETA: You also may want to dry box them if you intend for people to light with matches.
In addition to medium RG's, i would go with a shorter stick, no more than corona or petite corona size. Most that smoke them are going to smoke no more than 1/4 of the stick, then throw it away.
I've handled the cigars for 4 nieces/nephew weddings in the last 3 years. I was the only one at each of them to smoke more than half a stick. Not because they are bad sticks (they were mild but flavorful), it is just that no one had the time to sit down and fully enjoy the stick. Mostly light it, hit a few draws, chunk it and go back inside to the other festivities.
Good luck on your wedding and cigar plans.
Reserve a good quality one for yourself as the Groom, it isn't in bad taste. I always give the groom a premium to smoke. One up-coming in October, my niece likes CAO Moontrances, so I will have her one in a tubo size to smoke.