Do I have to file for aos from tourist visa before my I-94 expires?

If you provide me with more information I may be able to answer this question but with the no details I cannot tell you for sure.

H1B visa validity with new employer when old employer withdraws I 140

This is a situation where you should not use Avvo but rather hire an attorney. There are too many details and too many questions.

Documents required to for applying for GC after F-1 student marrys US citizen.

See Mr. Segal's answer. List of docs is there. Consider hiring an attorney to assist you.

Do we need an attorney for a "Holdover" proceeding that is set for October 25, 2013.

It's a good idea to get a lawyer. It's a better idea to get an L&T lawyer instead of an immigration lawyer since this is an L&T question not an...

Can I appeal to the case of my visa denial?I have all the necessary information.It looks like this might be impossible to do so.

Is this questions about an administrative case taking place in Greece? If so you need a Greek lawyer not a US immigration lawyer.

I received my citizenship through adoption 10 years ago

No, you cannot.

I have a felony in my record. will I be able to help my husband apply for green card?

Depends on your conviction.

You should consult with an attorney and try to contact your wife to discuss this with her.

Can I still finish out working on my J-1 visa while I submit and wait to adjust to permanent resident status?

Employment authorization usually does not take 90 days it's once of the few things USCIS does in a timely manner.

Can I-601 waiver take more than a year to get approved?

Yes.