How does "Exile and return to battlefield" work with a Manifest
Your first two questions are a duplicate of this question. (Yes revealed.  Yes flipped)
For your third question, it won't return from exile:

304.4. Instants can’t enter the battlefield. If an instant would enter the battlefield, it remains in its previous zone instead.
307.4. Sorceries can’t enter the battlefield. If a sorcery would enter the battlefield, it remains in its previous zone instead.