Rejuvenate

[Blaaaaaaaah]

I've finally got this skill - yay!!

Question: Should I empower 5 points into cool down for this? Original cool down is 10 seconds, after 5 points, the cool down is 7 seconds. I know it's only 3 second difference, but you know how sometimes 3 seconds in game is a lot when there's an intense healing session.

I want to empower 5 points into sp consumption to this (I wanna do the exact same empowerments as my normal heal on this skill). Is it worth it? Do people use this skill often? Or should I save it for other skills?

Thanks in advance!