Will I be able to apply for DACA, and mostly be denied because of the arrival to the states if I fulfill the other guidelines?

If you do not comply with ALL of the requirements for DACA eligibility, USCIS will not approve.

Does USCIS return any original documents along with the original PERM labor certificate when they deny an I-140 (premium)?

USCIS will not return any submissions including originals after a denial of a FORM I-140 is issued.

Do I still qualify for DACA ? What information do I send when I renew ?

You will have to disclose the two events to USCIS if you apply to extend DACA. USCIS may or may not extend DACA at their discretion.

If you are not able to obtain the FORM I-94 from the CBP website you will have to file the FORM I – 102 with the USCIS to request a duplicate FORM...

Do I have to change name after marriage before filing I 485

You do not have to change your name in presenting your application for adjustment of status. If you proceed with your maiden name or your married...

Do i Need to fly back or not?

You have a crisis situation and if you are not sharing a home with your spouse you will have a significant challenge in obtaining your resident...

F1 COS - Change of school ( want to pursue studies from a different school you applied for COS? Can you do it? )

If your change of status to the F-1 is approved, you can change schools. You should contact the DSO for guidance.

- If I leave within 6m from date of my I94 expiry ie by 4 June 2016 does that still cancel my visas?

You need to depart prior to June 4, 2016 to avoid the 3 year bar. As to the B-1/B-2 visa , the day your FORM I-94 expired and the change of status...

I have an immigration question regarding I-601A provisional unlawful presence waiver.

The FORM I-601A waiver can not be filed if the petitioner is a resident. You can wait for a change in the regulations or become a U.S. citizen...

How long should i live here as a resident so that to get the citizenship?

You must be a lawful permanent resident for 5 years ( 3 years if married to a U.S. citizen) before you can file the FORM N-400.