How safe would it be for me to ride the Burke Gilman commuting from the U district to downtown in early AM hours, 4-5am-ish? I am getting increasingly frustrated by my 5 mile commute taking one hour (downtown to U district at 5pm) by car and am increasingly angry by the time I arrive at work. However, I'm concerned about my safety by cycling home on the trail that early in the morning. Thoughts?