use 700TVL cameras for decent quality, it's only a basic system so you won't need any features the top of the range DVR's provide, so camera spec is the main thing, you'll want night and day, and the range and focus is up to you
it will do an alright job, but the cameras are 600TVL (700TVL is the standard we use professionally) and i haven't heard the brand, i would go for an inspire silver/blue dvr and IR Lab 700 TVL cameras.
