Yes. If you comply with CSPA, the age is frozen so long as you sought to acquire the visa before aging out.

You do need to have a current offer of employment from the petitioning employer.

With humanitarian parole, generally limit to 90 days.

Try calling customer service and see if you can get scheduled.

You will get instructions from the National Visa Center and you should wait to hear from them.

If your spouse is an L1 and you are an L2 and you have an EAD, you are authorized to work until you change to another status.

If you are a lawful permanent resident of the U.S., you are not required to remain married to your lawful permanent resident spouse to qualify for...

If your start date is October 1 and you are approved by then, and you are granted a change of status to H1b, you are an H1b on October 1, and you...

If it was completed within 60 days of you filing for adjustment, you can submit it. If it was done over 60 days before you filed, you need a new one.

If your spouse is filing for adjustment of status, you can file concurrently, or any time thereafter.