I'm a little late to the party MiamiRob but with all this homework your doing you should just by the product get your electricians to run the wire and do it yourself. Hire a guy like me to show you where the cameras need to mounted, wire it all up and network everything. Any CCTV company doing a job like this without atleast doubling their money would be a damm fools. Your probally looking at a 300% markup including labor. Just remember your gonna get what you pay for if you pinch somebody on price you can probally expect the same in return when it comes to product workmanship and service call response.