I think I would open Potion/Couryard into as many Scrying Pools as possible, and pick up a Trading Post to thin. The alternative would be to skip Potion and go For MV/Torturer.
Doesn't it hurt to gain the silvers from TP?
It totally does. The thing is that Scrying Pool's baseline power is very high and Stone's very low, so the support for Scrying Pool doesn't need to be great to make it viable. (And conversely, the support for Stone does need to be great.)
Trading Post is a pretty bad trasher, but it still thins by 1, and Scrying Pool tends to be viable even without any trasher. If there was anything better, like Forager or Steward or Lookout or really anything, I'd say SP should be by far the strongest thing to go for.
When you go MV/Torturer, how you generate buying power? If i'm trashing the MVs theres no villages other than Shanty Town...
Absolutely don't trash MVs unless the game is almost over.
You would open Silver/Courtyard or Silver/Silver and then ideally don't buy more Treasure cards (your starting Treasures are basically enough). Your goal is to maximize the number of Tortuers you play each turn, so you only want cards that make your deck go more smoothly. That's MV, torturer, Shanty Town, Maybe Trading Post.
Another card that's probably worth buying eventually with both strategies (since they both get lots of Action cards) is Vineyard.