Steep the grains in the mid 150s for 45-60 minutes.
It is assuming a 5 gallon batch,
3 gallon - 60 minute boil, and adding the extract at the beginning.
If you can do a full boil you probably wouldn't need the extra 1oz.Citra at 60 minutes.
Extract notes from the forum thread author:
As far as First Wort Hop / Steeping hops.... I would add them with around 10 min left in steep (before rinse), and put them in a different bag than the grain. Then you can leave them in for the whole boil.
Original Authors Beer Profile:
Estimated Original Gravity: 1.066 SG
Estimated Final Gravity: 1.018 SG
Estimated Color: 9.0 SRM
Bitterness: 65.2 IBU