I honestly think it would burn the led up immediately, however if you had a higher power led laying around you could always look into swapping the mother bored and modifying the heat sinks a little bit.
Or as for plan b you can order led chips which they higher the wattage the more efficient the chips will be also being far brighter.
Than there is plan c to add a small voltage regulator to the led panel and increase the voltage of the lights therefore giving out a higher output. Depending on the voltage regulator you add minimal weight to descent weight however youd also have to run the power wire and ground wire in the lighting system to the voltage regulator. Also making a rotor switch or pay a few extra bucks for a voltage regulator with a knob to control voltage going to the led chips them selves