Re: This seems out of proportion to the offense
"Many weekends doing community service, or similar, will be cheaper, not cost him his job and enable him to care for his child."
So you want to effectively reward him for being a thieving hacking so and so? Letting him keep his job and still be a father? Sorry, but no. It'll teach the weasel a lesson. He should have thought about that before committing the crime. People like you are the reason the "justice" system in this country is so goddamn soft and unjust.
And tell his child when they're older, "Your dad wasn't around because he stole from someone. Actions have consequences, little one".