Correct me if I'm wrong, but that recipe looks like a very high hydration dough.
Difficult for a beginner to handle.
I know I'm close here:
Flour (100%): 939.95 g | 33.16 oz | 2.07 lbs
Water (88%): 827.15 g | 29.18 oz | 1.82 lbs
IDY (1%): 9.4 g | 0.33 oz | 0.02 lbs | 3.12 tsp | 1.04 tbsp
Salt (2.5%): 23.5 g | 0.83 oz | 0.05 lbs | 4.21 tsp | 1.4 tbsp
Total (191.5%): 1800 g | 63.49 oz | 3.97 lbs | TF = N/A