I'd love to go off-grid electric, but I'm just too much of a wimp and couldn't give up my air conditioning and fans and freezers, etc. To keep them, a solar/wind system would cost a fortune. Its right for some people in some situations.
You mentioned an out-building or two for brooders etc, maybe it would make sense to just give it a try for them with a smaller, cheaper solar system to give it a try? I just think for people who need lots of freezer space for livestock freezer camp and want to keep A/C, off-grid electric would be very costly to set up.
I'm kinda thinking the same things. We have a little guest cabin on our homestead and I was thinking about putting solar on that first to learn more about it and not spend a small fortune!