If you have children who are old enough to know what’s going on, accept the fact that they are also old enough to be really hacked off with the situation too.
They may well exhibit manifestations of stress and anxiety, just like you and the best thing to do is recognise that when they blow off steam, they aren’t necessarily doing it at you, but at the situation.
They are also having to cope with changes to their routines and perhaps even their living arrangements and they didn’t ask to be sat in the center of the fire.
There are a great many counselling services for children and your doctor’s surgery should be your first port of call. There may be a resident counsellor they could talk to, or if you know that’s likely to be rejected, there may be a leaflet or two you could poke under their bedroom door.
It is a difficult thing for them to adjust to any major upheaval, even if you think that in their heart of hearts they believe you guys are better off in separate houses.
Be prepared for the sparks to fly but remember the dust will settle. Love them unconditionally either way; it will end.