Sounds like you two have made the decision to get married but are just waiting for the kick to get you over the fence. I know for me that I danced around the issue for a while until it just hit me one day that I didn't want to take the chance of losing S because of my indecision. 20 minutes later, I was engaged. S actually appreciated being able to pick out her own ring based on my suggestions but she and your Dr are probably as different as they come.
J you have always thought things through and that is one of the reasons you are in a really good spot right now. No offense to my Canadian brother Andy but I would steer clear on his advice towards being FORCED into marriage. You are doing the right thing by researching how the dynamics will change and the effect it will have on your girls. I could be very well that they may ask to live full time with their mom. I'm not saying not to do it but definitely continue to do your research and think things through.
