Yes, clearly a Vineyards game. You have good draw (Lab), villages, multi-buy (SR and Outpost), and decent sifting (SR, Inn). Even Crossroads can be a reliable draw, as long as you already have enough Labs for support to get the green in your hand. I can see how double-Jack is tempting, because double-Jack strategies when there are no attack cards to slow it down can pile-drive the Provinces pretty quickly. But if that's the case, then they're not contesting your Vineyards, during which you should be able to pretty easily get them up to at least 6vp each. And you'd have better pile control.
So yeah, "How. How...!? HOW!!!!!!?" = Vineyards