I use two headlights, one on my helmet the other on the handlebar. It lets me see where the bike is pointed but also lets me scan the roadsides (looking for deer that might jump out in front) or pan across motorist faces to make sure they see me. I also use 2 rear lights in case the batteries die on one. Reflective ankle bands are great, the up-down motion distinguishes you as a cyclist not just a traffic construction barrel.
Riding in groups lets you use fewer lumens and there is safety in numbers.
I prefer to ride on low-traffic routes even though some are quite dark. Be cautious of big descents where your speed can outrun your lights. I'm not a fan of riding along the river on the MUP, the bugs get in my mouth and nose and eyes; and the humidity fogs my safety glasses. On the other hand, some of the low-traffic roads headlight glare can be an issue when cars don't dim their high beams.
Night riding can be very serene and peaceful. I've had some wonderful rides in the dark.