To Brumate, or not to Brumate?

[Invictus]

Well, that season is upon us, and I am deciding whether or not to brumate my corns, kings, and milks. Most will be breeding, but some will not. Here's the problem:

Our house has a fully finished basement, and is so well insulated it would probably withstand a nuclear attack. No matter how hard I try, I cannot get the basement below 70 degrees. This could make brumation VERY difficult.

So, the questions for those with the experience:

1) Has anyone ever bred Kings, Sinaloan Milks, and common Corns successfully without a brumation period?
2) Are other factors like lowered day cycles and slightly lower temps (just shutting off their heat source in a room that is about 72 ambiently) enough to trigger mating?
3) If you've ever faced the problem of a warm house, what did you use to lower the temps? Suggestions? (air conditioning is right out of the question for me, btw)
4) Is 2 months (December/January) enough time for brumation? Do they really care?

I look forward to hearing from the colubrid breeders here.