Hi, I own a small business that is located in a very large warehouse (250 feet x 550 feet). I want to replace my old DVRs and crappy cameras with an IP system. I have read a lot of posts about low cost systems. Cost is a concern, but not my primary concern. Primary concern is a stable reliable system that allows me to monitor and record employees, customers, and would be thieves. I'm going to need somewhere in the vicinity of 50 cameras to accomplish this. I have built pc's in the past and have basic network knowledge, but needs a lot of help here. Please recommend a PC, POE switches, and cameras that will work well together with BI. Thank You.