Not too many LH 3B out there, but there's certainly one!
I reckon they still want a RF if they don't get Harper (or Machado). Williams might stay as LH bat off the bench (paired with McCutchen in LF). Just can't see them pencilling Quinn in as a starter.
I genuinely don't know. If they whiff on the two big guys but bring in five new players (McCutchen, Segura, SP, RP, one more bat) that's still a lot of change, but is it enough? It also puts more pressure on Hoskins and Herrera, both of whom are best IMO as complementary players (Hoskins as the 2nd or 3rd-best guy, Herrera as 6th).