how to setup an inexpensive home network?

One element I picked up from watching pro vids on networks is the "service loop", a loop of cable that gives you the spare length if you need to fix something. There are other choices that can be used, though they cost more money, such as Keystone connectors which need very little untwisting of the twisted pairs. General electrical safety: keep your network cabling clear of mains power cabling.

I have a house with about 2500 sq ft area with THICK walls. I have a good broadband connection, but WiFi was not available in whole house. I have 4 different routers, and I was not able to use them all, they were simply not playing nice with each other to extend range of WiFi and i was not considering wired connections.
 
I am going to setup wired connections to access points at each floor. There is a possibility of increasing the area to 3500 sq ft in 3 stories, so I'll be needing about 6 access points + ethernet connection to TVs, and it has an office that requires about 10 wired connections.

My whole house is wifi networked. 8 different equipment in home theater room, 6 in study, 7 portable phones and tablets, 6 other equipments like TV's & bluray/STB in other rooms. All networked via high speed wifi router.