As Mutsanah mentioned, you can vary your carbs based on workout intensity as one aspect of carb cycling.
However, depending on how lean you are, how long you have been dieting, a high day, IMO, will definitely be beneficial to refill low glycogen stores and rev up your metabolism if it is sluggish.
Regarding feeling like you are constantly eating, can't help you there, and it is hard to nail down someone elses macros because there is just so many other variables.
For example, when I started dieting, I was consuming over 3500 calories and losing weight. If someone would have looked at my macros and saw that I was cutting, they would have assumed I was crazy and wouldn't lose, but considering I was eating well over 4000 calories before I started the cut, it was a drastic change. And right now, I am eating a hair over 3000 in an attempt to slowly gain weight. I hope that helps illustrate the difficulty in helping with macros (i.e. 3500 to lose, 3000 to gain, same person, different time frame)
Regarding High Days leading to a binge, I do not see the logic, if you are disciplined enough to follow your diet plan on low or average days, why would high days be any different? In fact, it should be easier, you are actually getting to consume more and maybe enjoy a cheat food here and there, thus giving you a psychological break.
For a rough place to start high days, I would double your carbs. Adjust from there, based on bloat, gym performance, scale weight over the next few days, etc.
Regarding post workout carbs, since you are cutting, yes you can get away with not consuming any provided you are consuming adequate carbs pre and during workout.
One final note, on the low end of your low days, 50g seems almost too low IMO. I had 50g of incidental carbs (only carbs came from eggs, a few nuts and whey) when I was intentionally depleting for my mock contest. Assuming you calculated your carb intake correctly, it seems like you would be close to depletion levels at 50g. If you are not competing, not sure why you would want to deplete, just my 2 cents though.