i did my 12 LAN points at home for my 4 room. each faceplate has 2 points, cost is 25$ per faceplace. total is 150$
I provide cabling and the K.O box, contractor provide pvc trunking and labour.
Cat 6 is thicker and harder to bend than Cat5e which is sufficient to carry 1 Gbps in house but no pc/laptop today can truly transmit 1gbps. max 200-300mbps.
so cat5e is more than enough.
in future, OpenNet will install fibre in your house and Nucleus Connect will provide 1gbps to your house.