Hey, I actually just updated the deck again! I decided that Cult Apothecary wasn't good enough, so I switched back to Novice Engineer.
As for your consideration of adding 2 Cone of Cold and Oracles, you can try testing them and see which cards you prefer! My list isn't the best there is, but I consider it perfect for my own personal playstyle.
If you'd like to hear my opinions on those cards though, here are my thoughts:
I chose Acolyte over Oracle, it is mainly because it is a playable card on Turn 3, and the matchup with slower decks (such as Warlock) is already good enough that I don't need the Oracles. I see both Acolyte and Oracle as equals in terms of viability, but in the current meta, Acolyte helps a lot against Paladins.
Not a huge fan of Cone of Cold in the Paladin matchup because it doesn't hit the whole board. I'd go for Dragon's Fury and Flamestrike if I wanted additional stalling. But that would be bad in other match-ups, so I've limited myself to just one Dragon's Fury. Cone of Cold is good against slower decks like Warlock and Priest, but I find that the matchup is already good so the additional stalling isn't necessary.