J.H.
A suggestion on saving money on a shower is to have an "afternoon tea" - that way you don't have to spend a lot of money on food. Just have a dessert table (you can even have close friends and/or family chip in and help you make desserts) along with coffee and tea. If you have the shower at around 2 in the afternoon, everyone will eat their full meal at home. And then just keep it simple and elegant.
Same goes with the wedding. If you're looking to keep costs down, you can have the reception later on a Friday evening. Have a small ceremony maybe around 7pm or 8pm and then just serve appetizers and beer & wine after the ceremony instead of a full dinner...
Both options can still be very chic and elegant without spending TONS of money.