Please don't think me rude as I obviously don't know your circumstances but with 2 young children myself I know time is precious.
I think the chances of you making a genuine 'salary' from your smallholding are slim. Could you not possibly get a lesser paid job much closer to home and use your saved comute time enjoying your smallholding good life.
You don't need a right lot of money to enjoy the good life as you're usually too busy knee deep in muck to be spending any anyway
I wish you well whatever you decide x