I'm building a CNCRouterparts.com benchtop pro 2x2 router. I have an MX4660 and 4 570oz Kelling steppers rated at 5A each. My power supply is a switching unit that is rated for 48VDC at 10Amps and I have a Leadshine shunt regulator as well. Is that enough/safe to use with this setup? I'm primarily concerned that the current requirements may not match my PSU. Here are two options I was considering (please see attached pics), and would appreciate any input on these or suggestions for alternatives.