October Wedding

I have two weddings coming up in October and I have already started to try to figure out what I am going to wear.  I always seem to be that person that is in a panic a few days before an event because I don't have anything to wear.  I am in southern Georgia where it is pretty much summer time all year round so it will most likely still be warm in October.

I have been browsing around on the Dorothy Perkins website (if you haven't been on there yet you definitely should) and these are the options I am deciding between...

HELP!