This looks fine, though I would likely lower the 60 minute addition and put those IBUs in the cascade 5 min addition. I have been trying to keep 2/3's of my IBUs in the last half of my boil and the flavor benefits while still balancing.
My other concern is that the Goldings will get lost in the cascade columbus flavor... that will be a strong citrus punch that may overwhelm the Goldings, but there is only one way to tell!
Hmm... Maybe drop the first COlumbus down some and add a 20 or 15 minute Goldings addition.
And send me a bottle!