I built my own lamp for that and it cost me roughly the same. It's best to use metal-halide lamps as their spectrum is very close to the Sun's. It's important to get one with a uv filter though.
I think that the Etymotic earpieces are the best for 1 and 2. Haven't tried ANC yet but Etymotic's noise isolation is equal or maybe slightly less than X5A or 3M's foam earplugs.
Add a very gentle 30db pink noise with Etymotic and I don't hear 99% of the noises.
Best protection so far - X5A along with Etymotic under them and pink noise playing.
I want to try some ANC pairs but they're quite expensive and I've read it only works for constant noises. Do they work in an office/coworking environment with people chatting everywhere?
Have you tried using VAPID? I didn't want to use firebase and the pwa app I made uses VAPID instead and push notifications show fine. Couldn't that be used in native push notifications, too?