I did Whitney last February, you can find the report in the trip report section, I used La Sportiva Trango GTX boots with "artic" socks by Carhartt. I had no problems with my feet being cold, but there was little wind and no clouds that day.
Not sure if you know anything about the road leading up, but the "middle" gate will likely be closed, and road conditions are..who knows. With this gate closed you will add on extra miles. I did it in a day and it was not a short day.
The trail conditions were there was no trail and it was all snow. Up on the summit it was somewhat clear due to the sun exposure, but there were some sketchy parts especially at the cables, which was nothing but a huge ledge. Another section leading to the incline before trail camp was a mess also and nothing but a huge slope of snow. Besides on the bottom half and right at the top, there will likely be no "trail". Especially this year with how much snow we got.
And as far as micro spikes, you will either be in boots or wearing crampons IMO.
