Any 30 somethings going back to school?

I'm 36 and started my part time PhD way back in 2003, but took 4 years out to have my two girls. Submitting on 1st May. It has been tough finding time to fit *everything* in, and sometimes my girls have had time just with their Daddy instead of all of us - he's been brilliant throughout. Think I might be out of my mind, but I've applied for history teaching starting in September. Might not get in, but if I do, there will be a lot of problems around getting the girls to and from school, as the university is 70 miles away and as history is crucial to reconciliation here in Northern Ireland, the only place I can get the course is in that one uni.

bump for later - great advice