Comment Additional advice (Score 1) 336
Plenty of good advice here, especially having a central cupboard where you can run your wiring and have your media centre and putting Cat5e everywhere. I would add:
* put the cupboard not next to a bedroom, the whirring can get annoying
* run HDMI and speaker cables to your media cabinet
* tvs you don't include in above, put 2 plug sockets behind so you can power a Roku/mk802/etc
* run light switch cabling and lighting cabling back to your switch cabinet rather than in series, then you can connect how you want
* you can put IR control light switches in, Google "livolo", then make sure your controller (android tablet) has IR blaster
* for my next project I will definitely buy from here for controllers, including dimmers and sensors
* you can put IP cameras rather than motion sensors, or you can combine with IR, but placement is important
* might want to put cabling to above windows should you decided to have curtain controllers
Like others, I would put insulation as a top priority. Heating is one of the major costs in running a house.
Phillip.