I don't have too much experience with 3p games, but Fool's Gold without trashing seems very slow here, especially if you're going to split them between 3 people. And Fool's Gold antisynergizes with Hunting Party.
The most straightforward strategy here is Haggler + Hunting Party stack. That provides a decent baseline, and Hunting Party can deal with Curses decently. I would still get a Develop to thin out the Estates and potential incoming Curses. That's 2 terminals, so a Hamlet should also be in the deck, which has the added bonus of providing +buy.
I'd probably open Develop first and then wait and see if people go for Young Witch; if they do, I might add a Fool's Gold, otherwise just Silver.