I don't really understand your hop additions. If you have .5 ounce at 60 minutes and then 3.1 ounce at 15 minutes I think you are going to have a VERY bitter beer. Have you put this through a calculator like Beersmith or Brewer's Friend?
What brand of beer does your wife like?
The recipe shown will produce a regular strength ale, not but not what I would expect an "American Light" beer to be.
Ever had a British Mild Ale? That might be a good place to start.
I agree with the above. It will not turn out to be a light beer. First thing I see 9.1% Caramel Pils which is a non-fermentable malt. That amount will not give you an American light beer more like a sweet Blonde Ale. Dextrin type malts rule of thumb is no more than 5%. Briess and other malters websites say they are meant to be used at 2-3%. For an American light I'd add flaked rice or flaked corn. They will help keep the beer light and aid head retention.