You got fit poorly for boots, that's a start. And 19-20in at 5'9 is your other issue. Widen you stance. At your height a minimum of 21, especially with a 3* canted binding.
NX2's are a responsive and supportive binding. If you don't like the way they ride that's fine.
Go ahead, drink that kool-aid.
FS: Forum Sauce 142 $200 plus shipping
FS: Flux SE30 $75 plus shipping