Hi! Beware of any pure native breed. They are hardy and attractive, survive on less than most, but the majority are very agile and will escape from anywhere given half an opportunity, especially if the grass is better on the other side of the fence! You will definitely need good fences. Financially, it depends on how much meat you eat if they are for the freezer. If you own your own grazing it helps considerably. If you have enough to make your own hay, better again. A small flock need not be very expensive if you budget properly. If you have good neighbours who also have livestock, you can share medicines or buy the small amount you need from them. As far as chosing a breed, I know nothing about the two you've mentioned, but if you want a small, easy to handle and attractive sheep, which produces plently of meat, try Southdowns. I have Dorsets which are very easy to handle, docile and can get very tame, but they can also be heavy which is a pain in the butt when trying to treat them or trim hooves. Get all the advice you can, and chose carefully. Cheers.