You should get the regular collar and a regular shirt. Both of those shirts look like they have studs and are tuxedo shirts. You are going to wind up looking like you are trying to imitate a tuxedo.
There are ties that are designed for weddings. Others may be able to post examples of wedding ties. However, very few outside this forum will be able to recognize a wedding tie, so it is not a big deal. Just don't wear a black tie (either regular or bow).