Checked on the lights you show the link on Amazon. Had one review and it said they were not bright! There has bound to be an easy solution! I like the idea.
Wish I would have seen it sooner!I purchased a set of these http://www.amazon.com/CatEye-Front-Light-Chrome-Black/dp/B00FFC4BVC
They are really small, lightweight, bright, and they have a strap to mount them to the arm.
See how compact they are at 0:14
Wish I would have seen it sooner!