The light you chose looks to be a good one. It has a Panasonic 18650 3300mah battery, which is good, 700 lumens (but don't expect it to really be 700). Finned for cooling. I'd say go for it. By an extra battery or two if you need longer runtime, and you can buy them on eBay, just make sure you get Panasonic as those are the best. The Chinese *Fire batteries aren't as good.

13 lux is not much. My dynamo light is rated at 80 lux and is bright, 13 lux would barely be visible.