You really have to set your priorities. It’s really really hard to go to business school, work and raise kids but not impossible.
I also suggest that you do get some work expereince under your belt. You also have to ask yourself - why do you want an MBA? What are you going to utilize it for?
You get more from your MBA with work experience.
I will tell you one thing - timing is never perfect in terms of going back to school. You just have to.