The answer is,

what does your customer want to do? If they are interested in being able to monitor Silver from a remote location, ip makes total sense. If they want to pan and tilt and zoom, ip makes total sense. Panasonic came up with a device to plug into their ip camera system that also allows composite output with remote control, so you could establish preset zoom/camera angles and easily access accordingly.

if the guy is a cheap skate, you certainly could use moderate priced video baluns and send a signal down cat 5 from stable to house and simply monitor the picture.

I'd push for fancy, because he's got the dough.