Online education was NOT EASY for me. I am not sure I could have done it with small children (although a lot of my classmates had small children). I think it depends on if you have to work and your ability to prioritize.
I got my BS when my girls were young (8 &6) my MSN when they were 12 and 13 and WHNP when they were teens. The online CNM program was the most challenging of all and they were out of the house by then

I think it is up to you and how much your children need you.
Good luck with whatever you decide