I like ur idea of pursuing greater than fifty/fifty. It sounds like a safe bet and would ruin ur w's plan. Right now I think you should be more intersted in respect than anything w/ w. Her talking to om in the house is complete disrespect.
W's decision making skills are questionable at best. Is it possible to put more of the parenting responsibility on her. I say that because it's time to shake up the affair some more.