Yes you may travel domestically with proof of your DACA status.

They can apply for a tourist visa on their own if they are able to establish their non immigrant intent.

It is important to disclose the incident truthfully but this should not impact the case processing or ultimate decision.

Where can I find Updated I-130 petition form?

The I130 form is on the USCIS webpage and can be submitted by mail.

No your minor daughters SSI cannot be used towards your income.

If a father is married to get his green card and he has a child outside of marriage, will he suffer negatively if he signs BC ?

This would constitute marriage fraud which has serious consequences.

No this is unfortunately not possible.

When filing I-140 and I-485 concurrently, is it necessary to file form I-944 and form I-693 at the same time? If not, when?

Form I944 must be submitted with I485 and the I693 May be submitted at interview.

Yes this may impact or delay the visa processing but it must be disclosed.

For form specific inquiries, it is best to consult with an attorney directly.