@NxtChoice: Better remove the protective screen from the case plates, so it actually becomes transparent

No, seriously, what kind of output such a tiny solar panel has? Especially on a cloudy day like in the picture.
What are you using it for?
It's a high-weight hallmark NXT node (raspnxt.hopto.org).
The panel has an output of 3-4W in direct sunlight. That'd be more than enough to run the cubie at full load with full core clock. However, below the panel (in the badass cardboard case I made

) is a 2Ah LiPoly that acts as a buffer. I also use external power from a USB hub now that it's winter, but in summer this should be capable of running autonomously with some more tweaks and lower clocks.
Which Linux would be the best to run on a cubietruck? (I have absolutely no experience with linux at all)