If you only have a few devices you can run it on the Pi Zero W for cheap, you don't need a top of the line 3b or anything.

https://www.adafruit.com/product/3400

https://smile.amazon.com/CanaKit-Raspberry-Wireless-Complete-Starter/dp/B072N3X39J

It's this one: Amazon store link.

I ended up getting it anyways after doing my own research.