Newbie designing a whole system - need advice

I use wifi but others successfully use the other protocols.

There is an interesting discussion about alarm systems here: Choosing a hardwired alarm system that can be "professionally" installed?.

Also, there are some good tips for searching this forum for additional information: Tips on Searching for Answers & Duplicate Topics in the Forum.

Details about what the Unifi Protect integration can be found here: UniFi Protect - Home Assistant.