Splendid, congrats for winning the jam by the way - especially the fun category!
I've had my own share of balancing issues in previous jams as well - I could never get it right, my designer blindness was preventing me from seeing the perspective of the player, that's why playtesting is super important as well. Having two difficulties, not more or less, it's something that I think it's just perfect for a game jam.
Fine tuning that flow between comfort and challenge is what makes a game so intuitive - It's not just about the graphics, the sounds and the story, but how the gameplay combines all of these pieces together - Without it, there's no fun. To me, that's the most important factor in a game: How much fun it provides. I'm still trying to study this and how to actually implement in my own game jam games...