I have done a similar distance 3 days a week for the last 8 years.
My commute normally takes about 1:10 without trying too hard.
If I hammer in the summer I can do it in an hour.
On a dark, snowy and windy day in February it can take 1:40.
It has done wonders for my fitness, especially as I have a desk job. It doesn't affect family life too much as I start early and arrive home at a similar time to when I was driving. I don't cycle at the weekends except for family outings.
Are you planning to do this year round?