Stepper size?

I am in the process of designing my XYZ table. I am interested in
routing machinable wax for use with my casting furnace, light wood
routing and perhaps (light) engraving aluminum. Not very deep cuts in
the aluminum.

I am trying to figure out a decent size stepper motor to use. I came
accross a few on the net in the 125 oz/in model, one is a Size 23
($40)Vexta PK226-02A, 200 s/r 3.6v@2A
and the other is a Size 34 ($25 used)125oz 2.5v@2.1A 200 s/r(steps per
rev).

My table is what will be moving, made out of 3/4" cabinet grade ply,
24" * 30". What would be the recommended size based on my application?

The over head gantry will house a Dewalt 1/4" laminat trimmer, not
much weight.

Anybody have an opinion on these types of stepper or do you have
another source I could look at?

Thanks.