I found this bible study plan at Bethlehem Baptist Church (John Pipers church).
My wife and I have gone through it once already and are going to do it again. You read 25 days a month then the remainder days you can play catch up or take a break or keep reading and brag about how far ahead you are to your spouse
Its also formatted into nice little bookmarks.
I found that reading with someone makes all the difference. My wife and I often talk about what we are reading and what it means or how this can be applied to our life.
bible study bookmarks (pdf format)