Jittery, again, let's focus on where you are, (the PNW) and what you're going (progressing from groomed green to consistent matching parallel turns using turn shaped to control your speed on blue terrain, and possibly skiing easier, ungroomef terrain/low angle afternoon bumps. And yes, the boots matter the most. Be a bit careful with 'carvers' as you might end up with a narrower, but much less forgiving ski.
If I were working with you, I'd like to see you on an 80-85 width ski with a roughly 13-15m turn radius. Something like a Nordica Navigator 80, 85, Wild Belle 84, or a Head V6, V8, Total Joy, or Absolute Joy. Every manufacturer makes this type of ski.
These skis will easily tip, rotate, slip, glide, etc.. and will allow you to access the skills you need to advance your skiing. Now am I an all narrow, all the time person for your ability level? No, but given your profile, let's err on the side of something a bit narrower than your original choice.