Scott,
First off, congrats on the child! I am expecting my first in six weeks.... I am surprised i have held off this long making him a bow.
For that length and draw weight, I don't think you'll even need glass at all.... this is how I make them. Very inexpensive, but if you want something a little more exotic, order a 1/4 lam of zebrawood, cocobollo or something else nice from KennyM, Binghams, 3rivers, trad supply wherever.
But to directly answer the question, you can make a bow with just one lam in the middle, especially for such a small draw weight and length.
Mike