KetoGains actually suggests trying them before training:
A personal note for me is that 50g carbs total is too much for me, but it depends on how hard you’re training.
I’ve found that I enjoy NutraBio Fighter Fuel before swimming super early in the morning. I try to get about 15g carbs worth in, which gives me a bit under 100mg caffeine too. I don’t need my biggest caffeine doses at that hour so it’s perfect.
Note that I will be testing different forms of carbs and how they affect ketosis on our YouTube channel. I’m almost done with the amino acid component, and will be sprinkling in product reviews too.
I would also personally go with the protein shake post workout instead, per step 5.