We will be arriving early morning (6:20am) with a LOT of luggage some of which we will leave with left luggage for a few days. We will have access to the BA Galleries Lounge (award travel) and wanted to freshen up and have breakfast before we leave the airport. We will be leaving the airport with a pre-arranged mini-cab. How is this best accomplished? Do we get all our luggage and take it to the lounge and then exit security and go to left luggage after breakfast? How long should we anticipate from the time we land to the time we make it to the lounge (so we can figure out when to have the cab meet us)? Where is the best place to meet the cab? Thanks for any advice.