Unless you enjoy networking as a hobby, I would worry with that strategy that there is a sizeable risk of wasting your time with unreliable devices, with ongoing maintenance work, or having to rework your network in a few years.
My current solution is to buy Unifi UAP-AC-LR (~120USD) and configure it as an access point using the “Unifi Network” app from my phone, and hopefully never touch it again. I have done this at friends, and fixed their WiFi woes, without requiring much of my time (occasional complaints that the WiFi isn’t working, but not due to the device*, just ISP or router issues). Easy to plug the AP into a new router if you change ISP or move houses.
* Well, one device just stopped working with a hardware fault: I think due to being installed in a very hot area. I haven’t had software issues or flakiness. Flakiness is my previous experience of prosumer devices and what I most want to avoid.
