John, you might consider a 2.5 amp fuse to power the stratux. A full-up stratux can routinely draw 2.1 amps in normal service and that does not include a fan. Also, a "normal" USB power supply AND cable are both rated at 0.5 amps (USB spec)-- which is WAY short of what a full-blown, grown-up stratux needs.
Whichever power supply (and cable is just as important) you use, keep an eye on the red power LED on the stratux, at least until you get comfortable with it. If the red LED ever goes dark, even if it relights a moment later, you have a power supply problem and your data will be immediately suspect. Over time, it can also damage the Pi and/or peripherals attached to it.
I like your choice of equipment.