Agree on PIAA. Well engineered but a bit spendy.A center stand is the only 'essential' you're missing, and I see you already plan to get that. A different windscreen was important to me (vs the factory fly screen). A different seat is essential if you hate the factory one, or not if you don't. I find a couple of RAM ball mounts on the handlebars quite handy.
I like my PIAA LED auxiliary driving-pattern lights, but they're pricey (likely because they did a bunch of actual engineering and have an outstanding pattern) so most don't seem very interested.
I have every accessory Honda offered on my 2012. Luggage was important to me, and you have that coming. The wind deflectors do little, but they do a little. Former member Strat tuner made a rather extensive wind protection set-up out of lexan at home. Look up his old threads on it if you want more wind protection as the seasons get colder.
The NCX is an outstanding commuter!