Always treat your co-parent with respect and compassion. A metaphor for co-parenting might be, "Treat them as well as you do a convenience store clerk." You want to get in and get out with as little hassle as possible.
The non-custodial parent is treated a bit like a second-class citizen in the legal system. If you want to go for 50/50 divorce parenting, I think you'll need an attorney. I also think it's worth it, if you want to spend as much time as possible with your children.