My husband and I were at first going to just have him move there. Since we have been in the process for over a year, we have had a LOT of time to really think it over. After talking about it in length we decided in the end it would be cheaper to move with him.
A lot of people will argue you don't have time for family. The thing is, I have talked to some people in OKC and they say that there are a lot of guys that argue "no time for family" yet they have time to party and get drunk on the weekends. I was told by one guy in OKC that those that argue no time for family are the same ones that are partying on weekends. If you have time to party, you have time for family. I agree with him. He said that as long as you found a place to live you would be fine having a family there.
So I am going against the grain - Take your family! Once in OKC if it isn't working, I will drive home with the kids. We do have a different relationship than a lot of married people though. I can't imagine being without him or not seeing him for more than a day and he feels the same way. The one night he was in Chicago almost killed us both. If he were having those feelings in OKC he would have a harder time concentrating. He would be focused on when he would get to come home and not on school. Also, we are used to full time work, part time work and part time school. After the girls are in bed at night, I help him study. It works well and I am optimistic it will work well in OKC too!
By the way - I am a stay at home mom so we don't have the employer issues. We will still have a mortgage and most likely car payment while in OKC. It will be tight, but worth it.