I also enjoy reading this thread, you have definitely got a ton of time, effort, and possibly a good amount of money in this project. I can only imagine.
As for the temps, I had pictured much colder temps then an average of +10 for lows, thats not too bad, seems I read somewhere that you expect about 6 to 8 months of ice cover, probably just hangs on longer due to the elevation, that's definitely a sweet place and I'll bet its hard to leave when it comes time to go, so much to do, so little time.
That's a beautiful Brookie btw, a person would never get tired of catching those! Kudos!