I would form network with other families, teaching the children in small groups, perhaps 4 or 5 in the mornings and then take it in turns to supervise activities in the afternoons, to a museum, a sport or just a runaround climbing trees.
We could divide the teaching - for example I can speak two languages well and could teach English while DP has maths, sciences and a PhD in philosophy. We could maybe contract tutors for other subjects as necessary.
We both have teaching experience.
Does this sort of thing actually happen? If anyone shares my outlook do post!