What are the chances of getting an appoval for k1 visa using a cosponsor ?

No you can still get an approval of a good faith fiancé visa petition with a co-signer. Consult with an attorney for guidance.

How long does it take to get interview notice after biometric in El Paso

It depends on the type of case you filed and the service center processing your case.

Do I need an updated i693 [Medical Form] for the interview? [AOS Package Submitted Nov 2017, Interview Date in May 2019]

You should obtain an updated medical exam given the time that has elapsed.

You would have a bar of inadmissibility for 10 years given your 1 year overstay. Consult with an attorney for guidance.

Can you get married after 90 days on a B1/B2 Visa?

This should not be your fiancé’s intent upon entry - to marry and adjust status through you. Consult with an attorney for guidance.

Who helped to make the documents?

You should disclose that your father assisted you in preparing the application and that you understood all that was submitted.

You should write a formal request to withdraw with whatever identifying information you have. You may contact USCIS to obtain receipt information.

Jointly filed I-751 but getting a divorce?

It is best to work with an attorney when are transferring your case from a jointly filed one to a waiver based on divorce. For both cases the...

Can I hire a lawyer to get my mothers deportation records? Can she enter the USA or Canada?

Yes you can do a FOIA with the appropriate government entity depending on your mothers case. To search for an attorney you can use either the Avvo...

Concurrent filing I-485 and I-765 with pending form I-130 ?

Yes you should include a copy of the I130 receipt for the I485 and I765 filing.