Stepper Motor Winding

Hi

Building a PCB router/ drill and I have a few questions.

I have some Superior Electric Steppers that are labeled 2.25V 4.6amp
They are 6 wire motors. I want to hook them up to the Dan Mauch 5amp
1/2 step control ( I know 8 micro step controls are better,,, but it is
laying around).

Should I run them in parallel or series connected bipolar mode?
I will only be using 24V for the moment (my only supply laying around).
I think the control is only rated for 36V anyways.

What are my tradeoffs for series as opposed to parallel winding
connectison?

I've also seen mentioned 1/2 winding mode that only connects one
winding and leaves the other open... Why do this?

Thanks
Dave