Hi, blesisngs!
I possibly plan to do the ascent to Brünnstein over the Dr. Julius Mayr Weg and then to do the Brünnstein Überschreitung until Brünnsteinschanze. Please see this video for the further route, I did not add it in the map.
https://www.youtube.com/watch?v=Jrjk73OBc_w
So the tour is also longer (6-6 1/2 hours?) and more dangerous definitely with the snow and conditions right now, maybe T4, I am not sure. Doing it the first time. I think experience with winter routes and confident grade I climbing would be good. Also maybe poles and good shoes (spikes) are enough, but crampons and an ice axe could be really helpful and more secure. If I do not feel safe or the conditions are too harsh I will return and Brünnstein alone would be a sufficient cool hike in the winter.
By the way: Christ is coming back really soon to establish a biblical kingdom here, so I can definitely recommend to resist the unbiblical measures right now. Blessings!!