Hello Fireman Sam
We were in a similar position to yourself 3 years ago - nearly 4 acres of very overgrown land. We borrowed 30 jacobs (lambs and ewes) and they flattened it for us as well as grazing some

It was a nice introduction to sheep as they belonged to someone local but we had access to watching them and getting used to their habits, seeing what care they needed and our first introduction to flystrike.
We now own our own little flock and although they aren't neccessarily 'easy care' they have been easy to care for! ours are texel crosses (some suffolk, some wiltshire) and as they were bottle reared they are incredibly tame.
See if you can gain some experience with a sheep keeper nearby to see all it entails but maybe consider loaning some grazing out first?