Or don't be afraid to leave as is. I made a 19.9 IBU blond (under my recipe tab) that calls for ~1 ounce of hops for a 5 gallon batch at 60 minutes. It came out absolutely delicious. I have yet to find a person who doesn't thoroughly enjoy it, from the bmc swillers to the other local EAC's. It's my first and only competition submission. We'll see how it does in a couple weeks.
Remember that a blond's character is supposed to be slightly malty with just enough hops for balance. You may also consider restricting the crystal to .5 lbs. A little caramel flavor is OK, but the focus should really be on bringing out the subtle flavor of the 2-row. Jamil has a good podcast on it, I highly recommend listening in.
Hope that helps!