The only thing scarier than going up hill with that would be going downhill!Nice, but still not a lot of space to keep stuff. Plus I think biking with a full pack on would get old fast. I have seen trailers set up for it, but that would limit you to roadways or at least really smooth fields. Depending on your situation though, it is a very plausible idea.
Something like this trailer might help out.
Foldable Bike Cargo Trailer
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Though I think this guy must live somewhere VERY flat.
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