Hi Tracey
This is my 5c worth...
I think I would still be pushing for the 8-12 shift .. as If you start at 5 you would be out the door when DH gets home and so you wouldnt get to see him during the day at all and remember being at home with 2 under 2 is going to be a job in itself with all the things you have to do etc (a fun job though) but you may just be burning the candle a little bit 5-12 is a pretty long shift after potentially being up during the night and up early in the morning... if DH is home for a few hours before you have to go to work then you get some time together and you can have 5 mins to yourself before you go to work ??
I am just trying to think of the reality of doing that day in day out...
But i guess if its not a possiblity then that is a better option for you .. or i guess maybe they would let you do the longer shift 3 days a week or somethin...
I dont envy the position you are in.
Good luck xxxx