old TNF fleece jacket as my mid layer.
My guess is that thing doesn't pass moisture for beans. We talking about you just bumming around the resort here? I'd definitely try and find a better mid-layer before shelling out hundreds of dollars on a gore-tex jacket, or just not wear so many layers. This is one of those times where backcountry or REI would be super useful since you could return the item if you still sweat up a storm.