I give: Lincecum and Gardner or Trumbo
I get: Romero and Holliday
I like this trade for you, and I would prefer to trade Trumbo over Gardner. This immediately changes your OF position into a position of great strength with Kemp, Holliday, and Garnder (who is underrated in my opinion). Additionally, the news that Lincecum decided to stop throwing sliders in order to preserve his arm is troubling as the slider was one of his best pitches. This might not be a sign of impending doom for Lincecum, but could still affect him in a negative way. Take the deal.