Currently we are renting an apartment and alternating living there and being with our children at home. This is a temporary arrangement.
Yes, temporary, this is known as
nesting and is impractical long term. You will need your own "home", it is standard for the children to travel between homes.
You may be inclined overmuch to be "fair". It's a problem so many of us here have to address lest we end up sabotaging ourselves. Yes, we're nice fair people but there has to be a limit to our sense of fairness so we stand up for ourselves and the children.
Also, resist the temptation to hide (or not report) some of the poor behaviors and perceptions. You as the reasonably normal parent need to come out of the divorce with as much custody and parenting as possible, for your children's sake.