Okay so ten puzzles a day was a bit of an overestimation on my part as they got rather tricky by the end, but I finally managed to complete all 300 puzzles! The final stats page said it took me 23h: 18m: 17s with an average time/puzzle of 4m:39s, total attempts of 1509 and average attempts/puzzle of 5.03. I have no idea if the freezes I experienced affected that, I tested a few times and it seemed to not affect the time tracking but I didn't really keep close tabs on it.
I started to jot down some thoughts and it was getting rather long, so would you mind if I were to just email it to the address that you listed earlier (or a different one if you'd like) rather than post it all here? It feels like a bit much for a comment thread, but if that is where you'd prefer it I don't really have an issue with it.
I did like it, I can fit that in here easily :) If I didn't I wouldn't have put almost a full day into it.