We have permission to do an evening, in the dark, ride at Illiniwek. It should be a nice evening to get adjusted to riding in the dark with a little bit cooler temps, but not too bad.
Don't have lights? Check with the local shops. I personally like to have the light on my helmet, vs. handlebars, so the l can see as I turn my head to look around corners. I think my light is 300 Lumens. I think they are more like 600 - 900 these days. They are rechargeable and not cheap. This looks like the latest version of what I have.
Illiniwek Park Information is here: http://www.qcforc.org/content.php?124-Illiniwek-Park
-Vonda