I put in a security cam for our house about 6 months ago. Not sure which system you looked at on Newegg but I briefly looked at those 4 camera sets available at Costco and they were not for me -- cabling would have been problematic.
I ended up installing this in an outdoor enclosure:
VIVOTEK - 10x Zoom Dual Streams PoE P/T/Z Network Camera PZ7111/PZ7121
Recording 24/7 to an old 500GB Linkstation NAS that I had mothballed. Resolution is not the greatest but it's good enough for my needs and with P/T/Z I can cover the front of the house with just 1 cam.