Is there anything i can do to hurry the process? i did the application on my own and had it reviewed by a lawyer,

Provide more information regarding the application your filed.

Want to Start Project Immediately, new role and location : Filing LCA and amendment : Grace Period

I agree with my colleague. This question the company should address to their attorney, not the employee to a forum/ attorney.

Can I stay at different location other than the LCA location while on bench?

Benching without pay is not allowed. Consult with an experienced immigration attorney if you continue to stay in the U.S. You may have issues...

Can I apply for H1-b visa, if my LCA is still pending?

H-1B will be rejected without certified LCA.

Benching is illegal, period.

Worked for company A on H1 joined B on 1/14 on H1 transfer want to go back to A. Both visas are approved and I-94 valid

You have already gone back and forth between employers. Is there any specific reason for asking this question now? Any change in situation? What...

Have not received biometrics I751 ?

If you did not get your biometrics appointment notice, you should contact the USCIS.

Do I need to submit my academic records along with my document when applying for a status change from a B2 to F1?

Yes

Should i pay for work authorization again

You will not be paying extra for EAD pursuant to the AOS filing. The EAD fee is included in the filing fee.

If I get an H visa through a company, how long do I have to work for them before I transfer to another company on the same visa?

As long as you continue to maintain H-1B status, you can move and work for another H-1B employer after they have filed the petition in your behalf.