I got it to work and am happy with it. I also use ulvenvald/seasonal aspens/simply bigger trees for trees and seasonal landscapes and time flies. TECHNICALLY seasonal landscapes and turn of the seasons can work together but is a little redundant. I do think happy little trees can work with seasonal landscapes too but haven't tried it. Imho seasonal landscapes looks better than turn of the seasons pretty significantly. recommend for seasonal unique plants as well. I have NOT gotten unfrozen to work well though.
Biggest recommendation is to use the previous version of seasons (check nexus comments for more details) or else your winter lods wont unload when you stand right next to them.
Also definitely use simplicity of snow, I found it is much more effective at covering non-winterized objects than BDS or others