2.02 intake valves... Overkill??

There are different schools of thought on valve size. Mostly based on cingular experiences. In terms of BJR - he's got history here and a lot of what you read from him needs to be taken with several grains of salt.
In terms of my own opinion - I'd say you will never feel a "drop in torque" or feel a poorer response from larger valve and it will enable me to make more power all around. I will always run 2.02 or 2.05s when I use iron heads. I don't believe in large volume ports - my heads rarely involve even removing much of the guide boss or major reshaping in the bowl. One of my most efficient engines has 2.05/1.60s, makes 450hp, and gets over 17mpg (422" small block). Those are 596s that were what I call stage II - meaning bowl blending, gasket matching, and some work on the roof, pinch, and short turn. It makes that figure on pump gas with a hydraulic cam lifting the valve .500". The power was figured off weight and 1/4 mile mph.
In terms of cost vs reward - I always replace the valves anyway, and the larger valve lets the new seat be placed out further with maintaining the stem height so the geometry is good. So it all makes sense to me to do things that way.