You need to speak to an attorney. It depends on the time involved but from the sound of it, it should be around an hour or so.

You can bring fraud and conversion (theft) causes of action against him.

Do I have to submit, health, employment, cellphone, social media, documents in a civil suit?

If they are relevant to the case, then yes. You can object to the production of these documents if you have a good faith belief that they are not...

Can I write off the same expense for two different businesses?

No, you cannot. That would be tax fraud.

Do I have a case of business fraud?

Does not appear to be a lawsuit on these facts.

No difference in liability protection, there are many other considerations when choosing one form over the other, though.

Can I sue someone as an executor of an estate? Even if I am barred from suing them personally?

It really depends on the terms and date of the release. The individual is acting in a separate capacity as Executor, but I would need to review the...

It depends on when you bought the house. Also, is gifting it to her an option or will this be a sale?

Is it legal to change the monthly rental fee after signing a Rental Binder and getting approved, without/before signing a lease?

Though called a "binder", the terms are not binding until a lease is executed by both parties. Either party change the terms until agreed upon at...