AHS West Coast Pale Ale Hop adjustment?

I'm brewing the AHS West Coast Pale Ale tomorrow. I'm considering adjusting the hops though since I'm not big on an overly hoppy beer.

Right now the calculation I came up with using Rooftop Brew's calculator is 45.5 IBU's. The hop schedule for the kit is:

1 1/2 oz 5% Cascade 60 minutes
.75 oz 5% Cascade 15 minutes
.75 oz 5% Cascade 5 minutes

I was thinking of changing the 60 minute addition to .75 oz instead of 1.5 oz. That would change the IBU's to 28.7.

Is there anything I should be worried about by doing this? I'm assuming that the beer would just be less bitter.

yes. you be taking away the bitter but your flavor section would be the same.

Thanks for the quick reply!