I can't say much re: stock density as I don't have cattle and have no idea what they need.
as for easycares:
well I got four ewes (not sure what you'd call them - full mouthed?) a couple of years ago. and with a borrowed easycare ram lamb they produced twins , twins and triplets (& one nothing); all produced good sized lambs, lambed fine and seem to be good mothers - only problem I had was one ewe (twins) got mastitis on one quarter though she recovered OK and all three raised their lambs fine.
This year: the 4 original ewes has twins twins & triplets & one nothing - again (though last years barren ewe produced the triplets this year) and four of the ewe lambs produced singles - all full sized, all good mums and without problems. Again they raised them fine by themselves, although I think if I get triplets next year I'll try harder to get one onto a bottle.
They lamb outdoors though I bring them in once they've lambed just to make sure everything's OK, to ring testicles and mark mum and lambs.
don't have to shear of course and I've not useed any flystrike prevention on them and so far (
) no flystrike. I too don't make/store hay and just out-winter them and they seem to be fine with that - when they got a bit hungry they started on the brambles, and as they don't have wool they don't seem to get stuck.
I have had some persistent foot problems with them but since discussing with the vet and following his advice (don't mess with the feet - just inject with long-acting AB) - they do seem to be fine
.
only other downside is they're hard to grab hold of - no wool, and if the weather gets very harsh I'd worry about their having enough cover to keep warm (although I'm down in a dip and have lots of trees/gorse/etc so they can always find somewhere sheltered in inclement weather and mine have been fine).