Can I get an EW-3 visa if I am also an H-2A worker?

Yes, you can do that if your employer is willing to do it. It is complicated from a timing standpoint but can be accomplished. It is actually the...

Can I go to any country/abroad apart from home country to change J1-visa status to F1-visa?

You would not change visa status. You will simply obtain an F-1 visa, return to the US and be admitted with F-1 status. Keep in mind you still...

You should simply ask the International Office for the LCA and prevailing wage determination they made. You have a right to it.

How long can I stay out of USA with EAC (Employment authorization card)?

You can stay out as long as the advance parole is valid.

What visa would be the best choice: K-1, K-3 or a IR1-CR1 ??

This cannot be answered without knowing your immigration status and when you obtained it.

Why is my i-130 form taking long after i filled for wife since February, 10,2017 ?

They are currently taking 10-12 months, sometimes longer.

If you are subject to the two year home residency requirement, you cannot change status but may be able to get an F-1 visa at the US consulate. If...

Can i re enter the US POE with no problem?

As long as your visa and I-20 are valid, and you have a maintenance of status letter from your school, you should be fine.

Will I be deported ?

If convicted, you will lose DACA and will be put in removal proceedings. You need to consult with a Board Certified immigration attorney immediately.

Does time spent on L1B (with combination of stay on L1B and H1B), after an absence of more than 1 year gets reset to 0?

This question has been asked and answered. If you are out of the US for more than one year, your six years of status starts all over again.