Here's a direct link to NASA/USGS's satellite imagery portal: https://lpdaac.usgs.gov/

You may wish to contact USGS directly, as they might very well have exactly what you need already prepared. You'll probably have to pay for it, of course. You might also want to ask your question at cartotalk.com, since they're a community of professional cartographers, rather than the largely hobbyist community we have here.