Backyard wedding idea?

I am getting married this June and my vision for the wedding is a backyard wedding ceremony && reception. I am a total flower child (hippie) so I want everyone barefoot. I want fresh picked flowers for the bouquet. I want all bridesmaids and flower girls in sundresses with different color ribbons. I want all the groomsmen and ring barrers in light blue jeans with white on up shirts and the colored tie to match their bridesmaid they're walkin with. I want "I want to hold your hand" playing while I walk down the aisle. I want people on blankets instead of chairs and tables and benches (except for those who need a chair and table or bench). I am planning on wearing a dress I designed with a hippie head band across my forehead. Reception I have a low budget so i need help with food ideas. My cake I am going to have peace && love signs on with flowers :)