In reply to NewbWinterHiker:
Hey there,
Good choice of location. I frequently head to Kinder Plateau for a drama-free night in my cosy tent. I'm a bit of a chicken but have no worries whatsoever spending the night by myself somewhere near Kinder Scout.
It's a good choice because you can catch some proper wintery conditions up there when the snow conditions in the valley might be 'marginal'. But it's not high or steep enough to be considered a proper mountain in my eyes.
Kinder Plateau is handy because plenty of paths lead up obto it and you have a path that takes you around the edge of the plateau. So if you get lost, just keep walking straight and you'll inevitably reach the rocky edge... Just don't fall of the side.
To answer your questions... I use an Akto tent and always felt safe, even in windy conditions. I haven't used the Zephyros but the tent looks similar to the Akto.
I can only tell you about my personal experience about Boots and crampons. The three times I went up there in winter conditions I didn't need crampons. I did wear them for practice more than out of necessity. The only time I did slip on ice was on the descent crossing frozen puddles on the path (when I had already taken the crampons off annoyingly). Personally I wouldn't buy crampons and boots for a hike up Kinder but do take them along if you already own them or buy some handy microspikes to go with your hiking boots.
Having said all that, Toby Archer mentions an episode around Kinder Scout in his recent Winter article that makes the place resemble more K2 than Kinder.
Enjoy, be safe and fingers crossed for some winter fun in the Peak.