What gerv said is good advice ... you need a backup on your light.

I like one on the bike, one on my helmet ... the helmet light I can aim quickly to get attention of drivers.

The Planet Bike Super Flash blinkies are very reliable. I'd still use too ... one on the bike out back, and one on the back of your helmet.

There are a lot of good LED flashlights now hitting the mass market ... you can do OK by shopping at Lowe's or even Target.

Traffic is light at that hour ... should be a good ride.