Summer is best for them because of the "dry" air, but yes, the Poles are excellent for auroras.
It will be at least a year before I can visit, but I'm already looking forward to it...she's only been there a month...:o[
That's something new I learned...don't know why I always thought auroras in Alaska were in winters....(probably because I picture snow in Alaska....thought I know that's not true...I've seen pics with grass lol).
How exciting...a whole year to plan on your trip...and she'll be all settled in....how fun.