I have a decent amount of experience on the nomad SFTs and a bit of time of the normal stiff ones though. Never ridden the keepers. But I'm 5'5" and 120lbs d rode the 168s, so maybe what I think about the SFTs will transfer to you and the stiffer ones, unless you like soft skis...
But I found them (the SFTs) to carve great, switch and forward. Great on groomers overall, no chatter really. The flex was great for me, nice and poppy and never felt unstable. Super fun for nollies and such. I'm not much of a big mountain/pow skier coming from NJ (skied these for 3 days in loveland co), but I did get some fresh snow with them and didn't really have a problem floating. They're decently fat. Never tried them in the park. So maybe the stiffer ones would be good for you. I though they were great skis when riding them.
If I lived in colorado I'd definitely consider them as an every day pair/probably own a pair by now.
At one point I rented JJs, the rocker and so shorter running length made it a little easier to throw around in trees, but the soft nomads were fine going through tracked out tree runs with a bit of fresh snow left. I'd be totally fine with not having a rockered every day ski.