Nodoggo

We need a couple outdoor cameras- one for outside a house and another for outside a shop. I think we need something that can take megapixel pictures/video since the cameras will cover a large area and I read getting audio would be good, too. I think we won't need PTZ cameras. I have an old Buffalo NAS (last firmware update was 2016) that has 300 GB of space and supports FTP. Running a network cable to a camera mounted on the house wouldn't be a problem. However, not sure how to get a network connection out to the shop. The areas the cameras would be focused on are weakly lit by lights at night. I don't know if that's a problem for night-vision or not. Basically, I have no experience with IP cameras but we need something for security. Any recommendations?