Amber I was gonna say check harbor freight LOL That's where my camera is from and it's been running great, outside, for years without a problem. I don't have mine on a dvr though, just a monitor. That set up is way cooler than mine lol
As for the people and letting them into your home, your personal experience and gut feeling about them is what to follow. Hubby is a little paranoid. It's ok to be a little paranoid, but you can't live a life with other people in it if you can't extend a little trust once in a while. Take the precautions of marking tools, securing the shop, and putting up cameras just in case anything happens, be it with these people or some random break in, and enjoy having people over.
Thanks De! I think thats just what I'll do.