The first thing I'll say is that the air purifier and the humidifier will fight, so keep them as far apart as possible, so the humidity has a chance to fully incorporate into the air before going through the air purifier.
I'd warn against Winix. Had a bad experience with the one I got from Costco, and some of them have UV purifiers. Avoid anything with "UV" or "Ionizing" on the box. These create ozone, which itself is a pollutant and irritant.
I have a smart Levoit air purifier that I love. Automatically detects air quality and adjusts the fan speed to match. It's set-and-forget. App and smart integration if you're into that. Nearly silent on low. Filter replacements are a bit on the pricy side, but I've reused my current one by blowing it out with compressed air. I will get a new set next time it asks for a replacement, though.
I prefer ultrasonic humidifiers, simply because of the zero risk of overboiling and no hot/burning smell. The things to look for are: auto-off (so it won't run dry), no (or toggleable) nightlight, and large tank capacity, in that order. Past that, it all depends on your price range and what bells and whistles you like. I have a little one liter one that my in-laws got me, and it's worked fine.
Bedroom is about 250sf. However, I would like to set it in larger rooms in my house perhaps. I am in SF bay area and the smoke is so bad.
In my desperation for a purifiers that would ship fast I ordered a few:
########## This was the only one that actully shipped after ordering.
LEVOIT Smart Wi-Fi Air Purifier for Home Large Room with H13 True HEPA Filter Smoke Eater and Odor Eliminator, Cleaners for Allergies and Pets Mold Pollen Dust,Energy Star,Works with Alexa, White
https://www.amazon.com/gp/product/B07GKVS2N8/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
So I cancled the other two.
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What are your thoughts on this one?
Medify Air MA-112 V2.0 Super CADR 950 H13 True HEPA Air Purifier
https://www.amazon.com/dp/B07LFJMS2S/ref=dp_prsubs_1?th=1
Is it slated to be in stock next week and ship mid October?