what to wear :: late fall miami wedding

We are going to a Miami wedding next month (the wedding I designed these invitations for) and I just got this gorgeous dress from Anthropologie for the occasion! Upon my sister's suggestion I am pairing it with nude pumps ... and these are my choices:

the dream choice :: Brian Atwood Maniac Platform Pump in Nude $650

the "maybe I can swing it" pair :: Pour La Victoire Aria Slingback Pump in Patent Nude $250

reality :: Jessica Simpson Waleo Pump in Patent Nude $89