I agree that Dukes and Haggler are key here, when you have an early $4 I would think NB is probably what you want to go for, stealing even one or two silvers over the course of the game is going to be a big deal when you're decks are filled with green and $5 is the key price point. I would probably open NB/Silver. The more I play with it the more I'm coming around to the opinion that opening Island is a bad idea, like, 90% of the time. The big thing on a board like this is the Duchy race, you're going to be greening really fast so your early game buys need to be spent all on economy, an Island is a missed buy now and a weaker turn later (when its in your hand) in exchange for trashing a single card, 2 vp, a little boost to SR? And you basically need it to collide with an estate, you're not going to want to set it aside with a copper.