Why are you in removal proceedings? I recommend retaining an experienced removal defense attorney. The attorney will review all your documents and...

I think it's good news. There some USCIS action on your case. Future updates may provide additional information.

It's a bad idea. You are encouraged to avoid travelling abroad when you are in proceedings.

It depends. I addition to filling AR-11, it may impact your processing time. Consult an immigration attorney for proper guidance.

Unlawful presence may accrue if your son leaves the US.

Submit and pay required fees for only 1 set. Duplication may lead to confusion and unnecessary delay.

Yes. If visit is valid and you don't have immigrant intent. At the end of your visit return to your country of origin.

More facts are needed to answer your question, that is too broad and general.

This has been transferred to Criminal Defense for the first part of the question.

If your I-751 is denied you will be put in removal proceedings.