Sure. But CIS has determined that this visa category is not top priority so they will review it eventually.

If you withdraw the N-400 and you wish to file again, you will need to file a new form N-400 and pay a new fee.

What question do you have? If you want to know what to write, I suggest you try FNU Vantika.

The county where he passed away will have a department that issues death certificates.

You should mention NRA membership. At least here in Wisconsin, it would be a favorable factor, like having a fishing license, but it depends where...

You should not have any problems being readmitted to the U.S.

Sure, if the mother agrees. You will have to live with the children for two years before you can file for them as their adoptive parent.

That depends on the law of the country that issued the birth certificate.

The short answer to your question is no, you are not permitted to do that.

No, the DUI will not affect your application to remove condition.