I don't like carrying everything everywhere either but I shoot every day, and my camera is with me pretty much all the time, so I what I do is stuff everything in my big bag and the big bag stays in the trunk of my car. My 70-200mm covers probably 90% of my shooting but If I need to tote extra stuff with me, I have smaller bags that will accommodate a couple extra lenses, a strobe, what have you.
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