Hi Yvan, this is looking really good!To answer your questions:
1. Yes the slack is normal although you can minimize it by keeping your knees a bit lower on the knee climb – i personally like to be able to ‘lower into’ the slack after the knee climb to make room to come between the poles with my torso
2. The spin looks good! It’s nice to have some rotation before the split
Keep working on straight knees into the loop split, the stag does look nice though!