420 Marin at Hudson Exchange is getting close to the finish line from the outside. This 60 story tower on the old Metro Plaza site brings roughly 800 apartments stacked on top of a base with shops and structured parking, filling in what used to be mostly asphalt and surface lots. The existing Metro Plaza ShopRite that sits in a low box next door is set to move into about 85,000 square feet of new supermarket space inside the base of this building. Instead of a grocery store in the middle of a pa