Oh, yes, do please look at Teeswaters (or any other
endangered indigenous breed) - Teeswaters are super-cute, nice fleeces sell well, and the breed needs all the help it can get. I'd have Teeswaters here, but it's too wet for their lovely long locks on our north Cumbrian wet uplands. (Last year I bought a couple of black Wensleydales to see how they coped - and they really don't cope well with our wet winters.)
Having said which, we do always advise new starters to get whatever sheep are around in your area first, preferably from a local farmer / breeder, so you learn on a breed / type that is known in (and therefore should be suitable for) your area, and have some support from your local sheepkeepers while you learn about keeping sheep.
If you have the land for 5 sheep, you could approach a local farmer to buy 5 weaned lambs from him/her, and get a bit of experience under your belt growing them on to 'finished' size. Then either sell them through your local mart, or get them butchered yourself for yourself, family and friends.
Or even ask a local sheepkeeper if s/he'd like to use your land for grazing, and involve you in the care of the sheep s/he puts on your land, so that you get some experience of handling and managing sheep.