Yep, we just have to look at the grand scheme of things. My only concern is; Will we end up a better team than before, even with the loss of Pogs? I really think we may just do that. We'll see, though, let's not conclude before we've seen the entire mercato. Like you, I feel we're not done yet. Morata sale + the impending sales of Zaza and Pereyra will bring in some cash for us to go after yet another midfielder.
Putting aside Pogba's deprature, IMO this transfer will be a fucking bomb. I think Gonzalo will fit in instantly and score shitload of goals for years to come. Yeah, it's a heavy price, but considering the whole team I'd say we're ready to fight for a CL title.
Zidane didn't have a minimum decade of top level I'm him left when we sold him. Pogba was on course to become better then Zidane was for us if we kept him for longer.