My ex wants 7000 in back child support up front plus sighning over my rights to her .and she will drop everything is this a good idea,I hate this woman because I've moved on in my life and she wants me to suffwer so what should I do.

The legal answer is - you can't "give up" your rights to your children unless someone else is willing to adopt them.

No, it's not a good idea - you can't just walk away, you can't make a "side deal" with her and do you want your children to grow up knowing you walked away from them?

Go to Court and fight it out with her. If the support order is more than you can afford, ask that it be amended.

Even if you give your rights up,your obligations will remain INTACT;););)

Its taking 50 percent of my pay I cannot live the courts said she doesn't have to provide anything for this child not even needs to work

its taking 50 percent of my pay i cannot live the courts said she doesnt have to provide anything for this child not even needs to work

You need to understand how the system works.
Let's see a situation:
1.You sign over your rights.
2.She drops her claim for back child support payments
3.A week later she petitions for child support again
4. The Court will grant her petition
5.Your agreement is legally NULL AND VOID.
Conclusion
You will lose your rights and you will be obligated by court order to continue your child support payments.

By the way I have never heard about child support 50% for one child.

You need to understand how the system works.
Let's see a situation:
1.You sign over your rights.
2.She drops her claim for back child support payments
3.A week later she petitions for child support again
4. The Court will grant her petition
5.Your agreement is legally NULL AND VOID.
Conclusion
You will lose your rights and you will be obligated by court order to continue your child support payments.

By the way I have never heard about child support 50% for one child.

The only time it can go to those levels is when arrears are involved. But the norm is somewhere between 15 - 20 percent.