I think you should have bought Herbalist on T2 or T3 (I would go for it on T2). It will speed up acquiring Apothecaries a bit, and it will give you +Buy to have a couple of more Coppers and then eventually Double-Duchy. Since you are not thinking about any other terminal, it won't clog you up too bad. It would be better if there was some strong Attack, because you will be playing it every turn after you have a couple of Apothecaries, but a single Rabble is not going to make a huge difference and Bureaucrat's Silves would mess you up.