I have some tp link deco mesh units I got refurbished from the official tp link eBay store. They work great and have good coverage. But it’s not open source and you need to use their phone app the manage them - but their app isn’t too bad. It does everything I need it to do
I got an 5800x3d and 64gb of ddr4. I see no need to jump up to a new CPU and invest in ddr5 memory yet. The performance benefit is only a few percent just isn’t worth the upgrade in my opinion