hi ts...
please try qube cctv system.... they are located along aurora blvd near broadway centrum.... first of all i would like to make it clear that i am not working there nor is getting anything by referring... i am recommending them since i have installed their products at several clients of mine and their products are worth the buck you are paying for... the after service is also good since they will replace the defective units instead of just repairing them...
for the specs, i recommend that you get their 700tvl cameras... the resolution is already fine and it has IR already so night viewing is good.. which regards to your DVR, get their 1TB option.... it is more than enough for your needs... if i recall right there are bundled packages with them in the vicinity of 10k-12k which will include 4 cameras ( 2-indoor and 2-outdoors ), the DVR with 500gig HDD, cables for the 4 cameras already and needed adapters and accessories... i suggest you haggle with them in replacing the 2-indoor units with 2-outdoor units since the outdoor units are way better in terms of resolution and clarity...
with regards to the installation, the cabling is just like what you IT guys do when installing LAN terminals... install the cables from point to DVR and that's about it... if you are using the ordinary cable you will need to install an outlet for the power supply near the camera for power... if you want to use the siamese cable, you need to buy a power supply box to be installed near the DVR... the only hard part of the work is when you want the cables to be concealed and that's when you need carpenters and painters to do the concealing for you...
once this are all completed, your CCTV system is all set to go.. just please refer to the manual included in the DVR for instructions on the operation of the unit... before i forget, please don't forget to ground the DVR unit.. i had an experience wherein the DVR was damaged due to an electrical storm...
if you still have questions please feel free to ask.. hope this helps ts...