If medicine is what you really want to do more then anything else, I would take Dan's sound advice and take a gap year, if you are unsuccessful. You also have to take into account, if you get your fees paid by your LEA for your first degree, then you will have to fund your second one. However, fees will no longer be paid upfront.
Bear in mind, if you use all six options, you can always decline your 5th and 6th choice, and will be eligible for Extra and Clearing, although very few places if any, come up for medicine. But it's food for thought
