Recommendations for a resort and backcountry set up

Currently skiing 102 K2 Reckoners and they are sick. I ski pretty much Lake Louise, Sunshine, Fernie and kicking horse and very comfortable in all the terrain there on these skis.

Looking to get more into backcountry and especially slack country by sunshine so I am looking for ideas/recommendations for a 70/30 resort and touring ski.

I heard the shift or cast binding is a good balance but I am fairly new to the idea of touring so idk what to look for in a ski. Any help is appreciated.

Thanks!!!