Thanks @pyackman. My biggest concern was number 2. I am planning to get expedite AP for medical emergency condition. My concern was if I come back with TPS my H1B will be void and I won't have EAD to work. But that answer my question.

To further clarify number 3. If denied do they stamp on passport like denial? I am concerned because I am with consultancy and I had worked under table during school days.

Thanks