I played a couple of test games of this against an A.I. It felt super strong to me overall, and I wonder if it needs a nerf or a price boost.
First game wasn't so bad, although it kind of felt like it. Familiar and Alchemist were also on the board. I got an Aqua Vitae and a Familiar, in that order (perhaps the wrong order), and then alternated between Alchemists and more Aqua Vitaeaeae (that's the plural, right?). Lack of +Buy kept me to one Province per turn, but I could have exceeded that if there had been +Buy available. Anyway, it ramped up really quickly, with the Aqua Vitae generally being a Gold or better. Extra Potions, to make sure I could get more Alchemists and Aqua Vitaeaeae, didn't hurt me at all, and nor did the Curses I got from enemy Familiars. The deck just breezed right through that stuff.
Second game had Worker's Village for seamless +Buy and Apothecary, to mass Coppers for the Aqua Vitae cards. 4 Provinces in 13 turns. The game ended with me getting 6 Provinces in 16 turns.
Granted the strength of both games depended on me having the right combos available (Alchemist and Apothecary), but Potion cards will tend to show up with other Potion cards, depending on how you select the kingdom cards, and so I wonder if this is just too good. Or is it just appropriately strong?
Certainly more testing and more opinions will be required before we can know.