Citizenship biometric appointment ?

Be patient .... most ASC offices are operating on a limited basis.

I agree with my colleague ... 2-3 months on average.

Enter 2 on ONE form, then provide a photocopy for the 2nd parent.

Did I violate my F1 status during my previous OPT?

Have you left the US, obtained a new visa stamp and returned? If so, you may have 'wiped clean' your history.

Talk to an attorney to decide which way is best for you.

Naturalization interview concern

No, this won't be a problem ... as long as you've been paying taxes, pay any child support (if appropriate) and don't have any criminal convictions.

My wife just entered US on an Immigrant Visa, will she receive SSC and Green Card automatically in mailing address i provided?

Yes, if she properly completed the form DS-260, paid the immigrant visa fee before coming to the US and talked to the CBP officer upon arrival ......

Talk to a NY adoption attorney. BUT, if you're thinking of sponsoring him to immigrate to the US ... he needs to have lived with you for 2 years...

Should I just answer the question and resubmit the same application or should I reprint A new application?

You didn't need to post a revised question, you could have just added comments. BUT ... are you saying that you left the question blank? ...

What card did I receive, is it a green card or EAD?

If you didn't file form I-485 ... it is an EAD.