You need to file for the extension with the new employer prior to your current status expiring. It is best to consult an immigration attorney.

My husband is an Amer and I am a Canadian. We were married 2 weeks ago after I was denied access and then only given temp acces

I agree with my colleagues. Your best option is to consult an immigration attorney. It will be difficult for you to re-enter the US since you have...

I agree with my colleagues. The process generally takes several months. it is best to consult an immigration attorney.

Will parents being out of status on visitor visa risk my wife's green card

This is not a solution. Only US citizens can file for their parents. Consult an immigration attorney.

USCIS I-129F Issue

You should consult an immigration attorney. You will also need to disclose the fact that you applied for someone else on the fiance application.

Should I apply for change of visa status now or I should wait more?

Generally it is faster to wait for your wife to obtain her citizenship. Consult an immigration attorney.

Can we file LCA & H1B Petition after the termination date as our US entity was sold out recently and the new office started now.

I believe this is the second time you have posted this question. Have your employer hire an experienced immigration attorney to assist you.

Can my boyfriend travel?

If he obtains advance parole he may leave the US, but it is probably best that he remain in the US. Consult an attorney.

Oath for N - 600 and N - 400

There is no oath ceremont for N-600s.

What if my spouse doesn't fulfill the condition of 1-864, then what options we have? Will it go against my green card process?

Did you have a co-sponsor file for you. If so that is the person responsible for your finances. Consult an attorney.