Tired of hit and miss purchases. HELP!

I gave up on Wireless Routers well over a decade ago. Cable comes into the basement in a closet. Modem-Router-APs

Consider a small x86 device These are the PC-Engines boxes in disguise. I ran the older ALIX for about 6 years.

I also ran a TP-Link WDR-3600 as an AP until it died. It was a good dual band for its time but did not cover my 50 x 16 ft 2 story wood frame abode. I have a few GL-inet devices including the AR-150 and the USB-150. I set the USB-150 as a wireless repeater on a USB wall wart. Easy to move where needed when needed, always good to go. The AR-150 was a wired AP in my office. Good for me. Like you if it can be wired, it is.

Got a free Unifi UAP (2.4). It killed the TP-link for range, easy 50 feet or more. Worked on most of my 1/3 acre from inside the house. Retired all the other APs. I was impressed so I got the AC-Lite. The range is less, but it still covers the entire house, deck and front yard, just not the hood, which is good

All the APs have been centrally placed high on the top floor.

Can you turn the AR-150 into an IOT\NOT Hub?
Describe your space please.