The only thing that concerns me about riding at night is that there are more likely to be drunks on the road then.
I actually LOVE and prefer riding at night. I'm certainly far more visible at night than during the day.
Get a reflective vest - harbor freight sells a $5 one that's excellent. That's very effective. Get a good taillight - the Cygolite Hotshot at $35 is excellent. $30 "1600 lumen" lights on eBay are actually quite good. I have one with an Action LED wide angle lens fitted to it, and it's fantastic.
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Work: the 8 hours that separates bike rides.