Does "UNUSED" AOS based EAD invalidate my F1/OPT STATUS?

You should be using the marriage based EAD but it will soon be a mute issue if your interview goes well.

Can I file in my application for Employment Authorization in Oklahoma if we obtain our Marriage License here in Houston Texas?

Yes you can file your paperwork wherever you are living.

On the day of Interview should we also give our updated forms when they ask for the interview notice?

You can give the updated information directly to the officer conducting your interview.

Do I need to wait for my L-1/GC to be approved to request his L-2/GC? Can I apply once mine is submitted without waiting appoval

These are questions you should ask of the attorney who is handling your immigration papers for the company.

Does sri lanka embassy allow us to take the wedding albums? or do i my husband have to carry a seperate folder with the piccs ?

You can take wedding albums or a separate folder with the pictures. You can look at the State Department's website for the embassy in Sri Lanka...

H-1b transfer

No once the transfer is complete the H-1B from company A is not in effect and you cannot work there. Make up your mind before you start the process.

Please advise on options available in my case.

You cannot travel because you have no status in the US. You need the help of an attorney in court to have the judge review the denial of your...

Apply for a United States passport. Take your school records and doctor records if you can find any.

You should not travel while your case is pending before an immigration judge.

What to do?

You will need to hire a lawyer to help you file the change of status.