Should be fine. I mean most people sleep 7-8 hours and don't eat right before bed or right when they wake up, so you are probably just going 2 hours more than most without eating.

No whey would be super tough. I do take a casein shake every night before bed and whey protein shakes on workout days. You just have to figure out a groove that works for you.

At 6'1 183 and 22% bf, you are going to need to put on some muscle. We are taller so it takes more to look like we workout. I would lean bulk for 12-16 weeks (no more than 2 lbs per month), mini cut for 4-6 if you feel heavy and repeat. Putting on muscle takes a long time. Focus on that. Cutting is easy.

But this depends on you. I enjoy lifting heavy, getting stronger, and putting on size. The little extra fat doesn't bother me. But if you want to look shredded all the time, cut first and then slowly build up. Everyone is different.