I think our biggest priority is CAM if we intend to play this in the future. Pereyra is great but he's better at CM. When Pirlo leaves we will need him there anyways as first choice backup for MVP.
I would put a lot of effort towards De Bruyne and then Dybala. I would only go for one fullback this summer. Darmian would be fine. I don't think we need two right away.
I would consider selling Berardi's other half if it means we end the mercato with Darmian, De Bruyne, Dybala.
Forget Zaza. You can find a bench striker for way cheaper.