I think it is a gorgeous dress too, if it were me, I would stick with the dress and do the outdoor wedding at the nearby park. Have you thought of any venues you might be able to have the reception at so you can have an indoor reception? Again, I don't know where you live, but Oct. can be pretty chilly, no matter where you live. Does the park have any indoor pavillions? We are having our reception at a local parks pavillion for less than $200 (that's with a $50 sec. deposit). I would stick with the supplies you have and build around your theme and colors you already have. A suggestion for the rehersal dinner, have a BBQ at the park after the rehersal, that way it really won't break the bank too much and you will already be there.