We moved to Orkney 4 years ago and have a two acre smallholding. It has been an awesome experience, we love the way of life here and, for us, the beautiful summers make up for the harsh winters.
We were warned when we first moved here that some people can be unwelcoming to 'incomers' but that hasn't been my experience. We moved here, my husband and i work hard on the island and we contribute the the local community which are all things the locals appreciate.
We keep a few weaners to fatten every year, we have to bring them over from mainland as there isn't anyone on our island who breeds them so that might be something to consider if you are also out on one of the northern isles. Also, costs and arrangments for abbatoir, we home slaughter so it's not an issue for us but if we wanted to sell the pork we would have to transport the pigs back to mainland on the ferry.
If your out on one of the isles it can take a while to get used to the way things work but amazon is your friend!