I followed the all-grain option at the bottom of the recipe, adjusted for 8L instead of 5 gallons:
All-Grain
7.5 lbs. of 2 Row Base Malt
1 lb. of Crystal 60
1/4 lb. of Chocolate malt
So I used 1.44kg 2-row, 192g crystal, 48g chocolate, then 9g of chinook at 60 minutes, 12g at 30 mins, and...