january and feb are my highest volume training months so i end up riding in the dark a lot.
dont skimp on lights.
i am personally of the opinion that all other things equal, night cycling with lights is probably safer than riding during the day, esp in more rural areas where good strong lights pop out of the darkness.
use good judgement, avoid places without shoulders, with blind, fast corners, always use two rear blinkies (you really have no way of knowing if a light fails if you cant see it, so its best to have a couple running.