[brewing]

Since you posted in the post war section, I am going to assume you are talking about post war rookies only.

I am close to finishing this set, 4 cards away.

My thoughts:
Very expensive if you don't have disposable income.
There is some debate at what constitutes a rookie card, use your own definition and run with it.
The high numbered 1949 Bowmans and 1949 Leaf Hal Newhouser are tough.
Be patient, some of the lower priced ones can be found very cheap. Don't rush.