I'm right now doing a carbbackloading diet, which consists of doing IF, and being on keto until after the workout, when i workout i eat a huge ass amount of carbs, sometimes 200g of carbs or more, since it is after the workout most of those carbs go directly to the muscle to replenish the stores, it has been working wonders for my body.
I've also seen some of the skin benefits with ketogenic diet, don't forget to take a multivitamin though, it's really important since you aren't eating that many vegetables!
I've tried a similar (or maybe the same exact) diet that you're talking about. There was a great book I read on it called "The Carb-Nite Solution" - I recommend checking it out, it's full of amazing science that backs exactly what you're doing - saving your meals until post-workout.
It's great to hear that it's working so well for you! I had great success on it as well when I did it a few years back, I think it strikes a great balance between keto and "normal" eating. I do supplement with a multi-vitamin, I eat veggies every day, but I can only have so many when my daily carb limit is around net 30g a day. Thanks for sharing @teutonium!
I read the book, when i'm trying to cut down to single body fat digits i do the carbnite solution, when im bulking i go for a more relaxed all nights are carbnites xD