Should both me and my spouse file separate forms 3520 for foreign gifts?

Wrong forum for this question.

Also, in addition to your personal qualifications, the position must be one that requires a Master's degree.

On F2 visa and not allowed to work based on my visa status. what steps should i take for my status visa to change, so i can wrk

You would have to qualify for a visa on your own right. You do not qualify for a work permit based on F-2 visa.

I'm planning on marrying an Australian woman of 62 years old. I am born and raised in the US and am a male of 65 years old.

You can sponsor her as a fiancee, or marry and have her enter the US as a Permanent Resident. It would be best to speak to an attorney to discuss...

What if a H1B application is not approved by September 30?

Speak to your company's attorney about Premium Processing.

What can I say in a statement of extreme hardship from my qualifying relatives?

An I-1601 application is not an easy waiver application and should not be taken lightly. You should contact an experienced attorney to help with that.

9 FAM 42.22 N1.11 Religious Missionaries Abroad

You may be eligible for an I-131 - Re-entry Permit. Speak to an attorney.

USCIS and previous marriage

The question is, could misrepresenting a fact affect your application? The answer, is, it could.

M working on H1B visa, my 6years of H1B is going to exp. in Sept 14, in which month should I apply spouse based visa.

You should file immediately.

Laid off when on H1B and overstayed for 4 and half months

It may be a problem. Consular Officer has discretion with any visa applied for.