Hi Sprig and welcome to your new life. I hope you love it as much as we do.
I'm not a fan of orphan lambs. Commercial farmers often opt to get rid of them if they can because they are a problem to raise economically, perhaps having health problems and being at a disadvantage in their start in life. Maybe they didn't get their dam's colostrum in the first six hours of life, maybe they just had a low birth weight, maybe they were rejected by the dam because they have something wrong which you can't see but the dam can, or maybe they are just the runt of triplets. This can lead to high input rearing, with antibiotics and other meds needed, which all adds to your costs, and also to the quality of the meat. You will all fall in love with your orphans so abattoir day becomes impossible.
My suggestion for sheep would be to think slow (as already mentioned), learn about your new local area, the soil, the markets, the weather for the first year, then buy in three ewes, in lamb, next autumn, and learn on them. You will get 5 or 6 lambs from 3 ewes, which are reared by the ewe so no feeding for you, and no being followed around by noisy lambs (it's fun at first but then they get big and smelly, insistent and a bit of a pest). Once you've gone through the process over the shepherd's year, you'll have a better idea of whether you want to go in for sheep, either breeding for selling breeding stock, or as meat, then you can up your numbers, change the breed, whatever, or do something different.
I agree about hens - the smallholder's life has to include hens, which help you slow down so you can listen to their wonderful chatter
I have no experience of cattle, but Belties have lovely woolly ears