There is no public issue concern in your inquiry.

You can just use your birth certificate.

Contact officials at LA CA county jail to find out how long your son will be detained.

You must have a valid passport to fly domestically. There may be problems, but you should be ok.

Yes, it is permitted to use the same spouse approved I-140 to apply for H4 EAD.

Contact NVC and USCIS in writing you are withdrawing I130. Reference receipt number of I130 in your withdrawal letter.

Yes, you can travel out of US with your H4 EAD in pending status, provided you meet all the H4 visa requirements to re-enter US.

Yes if F1 reinstatement is denied by USCIS, one may exit and re-enter with new I-20.

With your limited information, you may file I485 with a pending I130. Your case appears to be a family preference case. The I485 will not be...

Your lawyer has all your immigration documents and has represented you so far. The lawyer is familiar with the court, lawyers, and officers. It is...