Pliny does have a CALCULATED IBU level of close to 200, that's normal for this beer. But in REALITY, it is rare to end up with more than about 80 or 90 IBUs because there is a physical chemistry limit to how much isomerized alpha acid will actually dissolve into the wort, and then a lot of it drops out with the yeast and hop matter during and at the end of fermentation. You'll end up with about 85 IBUs from this beer, guaranteed. So, other than the fact that the recipe arguably uses more bittering hop additions than are necessary to achieve the final ceiling of 80-90 IBUs, there's not a real problem to be concerned about and it will turn out good the way it is.
Some say that the bitterness from whole hops is 10% less than pellet hops. I'm not so sure that's true. Again, I wouldn't worry about that part of it either.
It will be good. Go for it.