Visa overstay and marriage but in a tricky situation?

Despite an overstay, you may still be eligible for adjustment of status based on a good faith marriage. Consult with an attorney for guidance.

I-751 almost 2 years outside normal process time?

You should submit a service request and schedule an infopass appointment at your local service center.

I-751 outside normal time for 2 years delayed?

You should submit a service request and schedule an infopass appointment at your local service center for further guidance.

What can I do? do you think I should go alone? can i get the green card without her presence?

No USCIS requires that both petitioner and beneficiary attend a marriage based interview.

Do you mean I485? That is for adjustment of status once your visa becomes available.

Yes you should indicate Business Analyst.

I-130 RFE : Affidavit for late registered birth certificate

Yes you can write the statement, have it signed (translating to your uncle so he understands what he is signing) and having it translated.

Filling in i-864 form: how to answer total number of immigrants?

Your question is too technical and confusing for a free forum such as this. It requires an actual consult with an attorney in private.

Can I reschedule to another state.

You will have to request a change of address and that should move your case from CA to NY, causing some delay in reassigning case.

I486 Employment Based interview and traffic violations?

No this should not impact the interview but you may bring copies of the receipts for these ticket payments with you at time of interview.