Keep in mind that if you take these children into your life, you may be inviting your ex back into your life more or less. Once she reaches a semi-reasonable state, she'll approach you about being in their child's lives. Or rather, the children would get curious about getting to know their biological mother. This could get hairy - especially if you now have another wife/gf and other kids.
My advice to you would be to investigate if the children's aunts/uncles or grandparents (both from your ex and the biological father's family) would be interested in taking in the kids. They can provide a loving, protective environment for the children and are probably more willing to deal with your ex than you are.
I predict NX launches in 2017 - not 2016
