Honestly , I dont think you can do all of those conditions with one set. I ve switched to Sitka gear
and it is great down to 25 deg. lower if your walking but your gonna need an extra layer for stand hunting in 4 deg.
For the cold I agree with layering suggestions as mentioned but I add Cabela
Dy Plus insulated over the top and am GTG for 4-5 hour sits.
I tend to overdo the clothing as the old body cant take that much anymore and this is just my opinion.