From a WiFi perspective, a central location for the WiFi router makes sense if you have computers, gaming consols, smartphones, etc. that need to share the device from multiple rooms. To expand the wired ports on the WiFi router, you just need a basic switch. Also, you don't need category 6 (CAT6) cabling - CAT5 is cheaper and completely sufficient for home networks. Also note that the CAT5 cabling can be purchased in bulk (250, 500, 1000 feet, etc.) and there are different types (CAT5e, plenum/CMP grade, etc.) You will be fine with regular CAT5 and don't need plenum grade. For switches I recommend that you look at the Netgear boxes that are made from metal (something like this: http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=234660&CatId=2796). I've seen these survive lightning storm after lightning storm is residential areas whereas other switches pickup electrical noise or spikes and get zapped - they look like they are working, but the network ports go dead. For whatever reason, the netgear boxes seem to survive time and time again without issue.