Replying to What park ski?

I currently ride out in the Midwest riding almost 100% park. Not any crazy big jumps but I do need stability for things like cork 7/9s. I had 171 line TWPs which I loved and suprizingly lasted my first 3 seasons of park. This season I rode 183 Vishnu wets but my underfoot edges are destroyed after a season (entire edge gone to the core). I’m gonna need a new pair for next season and I’ve been looking at pulling the trigger on some mango 90s. I’ve heard really good things about their durability and how they ride. Also would 181 be a good size if I’m 5’ 11” 170lbs? My vishnus felt perfect in length but Ik they run smaller. Should I cop them or are they unnecessary for me?