The Flir camera wireless is actually pretty decent, range wise. The last install I did, one camera is 200 feet away from the wireless transmitter - but again, greater distance equates to crappier picture.
Some systems have the Power over ethernet (POE) option in a Cat5/6 setup. POE will cost more.
I tend to stick with the coax installations, single wire pull if you have the right stuff.
https://www.spycameracctv.com/spycam...-voltage-wires
Some systems allow for both wired and wireless, check each one out and ask questions. Costco offers packages, you get what you get. It'll cost a little more, but for custom systems -
http://www.flir.com/security/display/?id=69284
Hard drive size is also important when storing 1080P video. Larger drive allows for longer time periods on storage before overwrite.