If you want to play the engine, you definitely want some +Buy or gainer. In this case, there's no +Buy, so I agree that the slightly convoluted Amulet Silver-gaining + Expand is the way to go. It's convenient that you can actually Expand Silver into Fairgrounds, which will be your main source of VP - getting 6 point Fairgrounds should be easy enough, especially since you can Island the VP cards you don't actually want if needed. It's also convenient that there's strong trashing with Remake, so you can start using Amulet for Silver-gaining sooner.
The Lost City split is going to be important; it's the only draw (other than Carto+WW) and the only Village. If you want to play an Amulet, two Expands, a Cutpurse, an Island and maybe a Remake on a turn, you'd better have at least half of the Lost Cities. Maybe you can put Lost Arts on Expand if you want to cut down on your Lost City usage. Cartographer + Wishing Well is usable, but not very strong: 1 of each equals an $8 two-buy Lab, two Wishing Wells and a Cartographer equals two Labs for 3 buys and $11, with the added downside of needing to draw your cards in the correct order.