It's actually fairly easy to get 100+ miles per week if you really want to, and not take too much time away from the family. The way I do it is to ride during my lunch hour, getting 12-13 miles in a day. On weekends I'll get up and be out the door before 6:30 and get 30-35 miles in on both Saturday and Sunday and be back by 8:30. Is there any way you can do this kind of schedule? Compromise is key.