Eek two different answers LOL

Just trying to work out if I would be able to survive on my own with the 4 kids if he ups and goes for 17 weeks. And 4 years would be a better time frame than 2 years, because all the kids would be at school so I would have a break from them and not go completely bananas...

Although in 2 years I would have a nearly 8 year old, 6 year old, nearly 5 year old and 3.5 year old.... so that would be nearly 3 in school.... maybe I could do it on my own.....