Yes indicate your full middle name for the I751.

Yes the I130 may be applied for while overseas.

Advanced parole may be better for reentry than student visa.

The I551 stamp is sufficient for reentry.

Your spouse can apply for a visitor visa despite abandoned GC.

You will need to submit a completely new application.

It could be because fees were combined into one check. Write separate checks for each fee.

Contact the Islamabad consulate of your request.

Refer to USCIS case processing times for more guidance.

You should confirm that your naturalization certificate is indicated properly but this shouldn’t impact whether you have your oath ceremony.