1 to 2 years is fine....in the meantime, listen for potential opportunities to reconnect with your wife emotionally. After reading some more of your old posts, you and your wife have been through some tough times in many ways.
Only you really know how to show her you care about her. I understand that at a time like this, we say were just going to take care of the kids because they are most important. You've got to find ways to make sure the mother of your kids FEELS like she's just as important.
T'aint gonna be easy, but I hope you don't give up.