I agree with my colleagues. You should list your actual residences for the past 5 years. It is also a good idea to have your wife update her...

Do I need to notify USCIS of divorce proceedings while i-751 is pending, or do I notify them when the divorce is finalized?

You do not need to file for a waiver until the divorce is final. It would be best to meet with an immigration attorney.

I need to know what I have to do to bring my two sisters in law to United States?

The answer will depend on the ages of your sister in laws. It would be best to meet with an attorney.

I-130 Question

I agree with my colleague. You should put her prior alien number.

Can i fix my immigration status ?

You should meet with an immigration attorney. Need more information to evaluate your options.

What if we send in our medical examination too late?

You should meet with an attorney. You need to send the I693 but also need to get a copy of the RFE.

How can I adjust my wife status based on marriage and a child we have together a few years ago?

As long as your current wife entered the US legally you can apply for her green card. It would be best to have an attorney assist you.

What category should I put in I-765?

Generally you would be in the category of c 9.

Can I get a sponsor from someone who have dui?

Yes your sponsor can have a DUI. The sponsor must be either a US citizen or green card holder.

Applying J-1 waiver, I-130, I-485, and I-765 at the same time?

Applying for a J1 waiver is a complicated process. You should meet with an attorney to evaluate your options.