If the stock rebuilt steering still isn't as easy as you'd like, then I'd install the shorter pitman arm.
I think power steering and power brakes has spoiled most of us to the original driving experience of Model A's.
In 1965, when I bought my 1962 Corvair Spyder, that sure spoiled me for getting back into my 1955 Chevy. It was like going from a light sports car to steering a tug boat.
If the stock rebuilt steering still isn't as easy as you'd like, then I'd install the shorter pitman arm.