Not sure if timing is good ... Hubbys on call..kids house meals yard.... Who is stepping into your shoes to keep house going,?? Who's got the kids if he is called out . Who had the kids in the day.. school if they get home early Whos making the meals??

Do you have to do the classes? Or is it a dream?

Putting it off a bit give you and hubby a chance to set things up better.. maybe you move or maybe you all stay at your folks. Or you save for a year to hire a person to help out while your gone

The kids will have security that way and its not all dumped on hubby to deal with while your gone

Team work it together for next year !!!

Give you time to switch jobs move or put in for a three week vacation so he is not on call.