Hi McLovinmylife, welcome to HomeBrewTalk.
In the original recipe, those are all the same variety of hops, which are split up and added at three different times within the boil.
Hop Alpha Acid percentages change from year to year and from grower to grower, based on the soil, rainfall, heat/cold, etc. - His were 8.8% and yours are 9% - I don't think most people would re-calculate a recipe over 0.2% difference.
However just be advised that your IBU, especially for your bittering addition, will be slightly - very, very slightly - higher.
If it were a big difference (say, 4.5% Cascades versus 8.5% Cascades) then you would want to re-calculate each hop addition amount so that the total IBU of each hop addition stays the same as the original recipe. (this is less important on the late-hop addition, though - primarily on anything boiled long enough to contribute bitterness!)