Originally Posted by waffle

Option 3, definitely! There are very few lounges that are worth spending seven hours in and none of them are in Schiphol. This is your last opportunity to stretch your legs before being enclosed in a metal tube for at least the same amount of time and Amsterdam is a fun city to visit, even in January and especially if you’ve never been.

There’s no problem going landside and coming back through security later. You can leave your carry-ons airside in a locker or landside at arrivals.