Jack,
My wheel only turns a few revolutions and stops, just like yours. Same with the original Wilwood calipers. When I spun the wheel without the calipers mounted, the wheel spun for quite a while.
The thing that struck me with your problem, (and it may not even be a problem) is that you said it went away after a few blocks.
It could be that after sitting for a time, (like over night,) the hydraulic pressure in the calipers "relaxes", and lets the pads retract just a bit, so there is a little play in the pads. Then when you apply the brakes, the pads tighten up a bit again, and don't move around. If you spin the wheel without squeezing the lever, then squeeze the lever again and spin the wheel, I think you'll see it may be a bit harder to spin the wheel until the calipers release a little. It's normal.
You said you have a high and firm lever, so it's not air in the system. If you haven't sprayed a little anti rattle/squeek on the pad backs already, I'd try that. Also, make sure your calipers are centered on the rotors. With my original Wilwood calipers, and even the new Brembos, I had to shim them a bit to get them centered on the rotors.
Ed is also correct in that the drilled rotors do make a little noise normally.
On a positive note, at least you're not missing any riding weather!!
Gotta go get the snow blower ready for tonights 4-8". SNOW SUCKS!!! :cus: