Mill the grains and mash at 152°F (67°C) for 60 minutes.
Sparge with 172°F (78°C) water and top up as necessary to get about 6 gallons (23 liters) of wort—or more, depending on your evaporation rate.
Boil for 60 minutes, adding hops according to the schedule, including the hops at flameout. Stir wort for 15 minutes to conduct a whirlpool, then allow 15 minutes for it to settle.
Chill to 66°F (19°C), aerate well, and pitch the yeast. Ferment at 68°F (20°C).
Dry hop either 2 days into primary fermentation or for 5 to 7 days once fermentation is complete, depending on preference.
After fermentation and dry hopping, crash and keep cold for 5 days, then package, carbonate to about 2.65 volumes, and enjoy.
My notes - increased malt bill to hit target OG and increased hops to hit target IBU, as original recipe uses very small hop amounts.