Sounds like you’re trying to put together a 3 ski quiver: 70-80mm carver, 90-100mm all mtn and 110+mm powder. Like I mentioned in my previous post I think you’ll be able to do most of your skiing with your kids with your narrow ski provided it’s more of a recreational carver. Since you’ll have a firm snow carver, for the 90-100mm all mtn consider getting a more soft snow biased ski, less of a charger and using it for those 4-10” new snow days with or without kids. Anything less than that and you’ll probably ski your carver and more than that you’ll be on your powder skis. Skis like the Rustler 9, Liberty Origin 96, J Skis Masterblaster, ON3P Woodsman 96, DPS Pagoda Piste 94, Fischer Ranger 94FR, Armada Declivity 92 would fit the bill. I think most of the skis you have on your list are more charger oriented and would be harder to handle in the trees and bumps. For length, depending on your ability level 170cm-180cm sounds about right to me. 165cm is probably a little short for an all mtn ski.