The most important thing about your case is that the "company's attorney" is also your immigration attorney whether he/she likes it or not. That...

Although you had a typical bad situation with the previous attorney, you really need to consult with a board certified immigration attorney.

The solution is for your wife to immediately go get a visa.

Some of this depends on the type of visa which you did not indicate. The type of visa may impact the prior extension idea.

As you noted you will need to rely on Section 245(k) to "cure" that unauthorized employment.

Follow to join is based on the approved 485, not the I-140. So you cannot file the I-824 until you are a permanent resident.

Depending on her country of birth, she will receive a work permit in around 8-10 months and a green card in a year or so.

First, the EB-5 program is not active and has not been since last summer. Second, this type of investment would not qualify since, if available,...

This is a legal issue you must discuss with your immigration attorney not on AVVO which is for general immigration questions. Good luck.

This has nothing to do with US immigration law, especially if you live in Ireland.