I think that might be a bit small for a full time LGD as they like to roam so I’d probably look more into a pet breed maybe although none of them would really be ableI sometimes see here and there few Scotch Collies, there are some breeders. I have yet to see an English Sheperd, probably it's not even bred here.
About the dog living with the chickens...
Since the chickens will not be where I live, I'd like to take the dog there everyday as I feed, water and spend time with the flock. If needed I'd like to have the possibility to leave the dog there during the day to check on the chickens (if there's a daytime predator danger) and it will come home with me for the night (I'll build predator proof coops and runs, but I'd prefer to let roam the chickens and I can't make all the property predator proof, unfortunately). Then, as I said, as soon as I'll return home I'll spend the time with the dog (as I already do with the dog I already have).
As you said, I was worried about the dog chasing the chickens or not doing anything if a predator get in (yes, I know a person who has 3 dogs, all shepherds of different breeds, they like to watch at the fox chasing and killing the chickens without doing anything)
The land is not very big, like half acre or less. Here you can't anyways have more than 49 chickens for family productions, so that will big enough for themthem (they now have half that area and we still have to mow the lawn)
Yes, I got that. English it's not my main language and was the first time I saw that word, so I did't knew other similar words that may be more adequate I'm sorry
Yes, I like them a lot but I also know they are a very demanding breed. I know I'm away for a bit long, but I need to work if I want to afford my animals
I want as much as possible the physical and mental health for my animals, so if I'm not able to support all the needs of a breed, I won't get it
To be left alone with out a lot of training. And that’s smart and kind of you that you’re considering the needs first because far too many people just get what they want without considering the animal’s needs.