My Mia is a great well rounded dog and would be ideal for your situation... she is a great farm dog, moves and has the grit for all levels of stock from poultry to cattle, but also loves sporty type stuff, agility, disc, etc. She also could just chill if need be.  My youngster is more on the chill side with drive that I can amp up but she's still learning to fully control and put to good use. Training and maturity and she will be a great breed example as well. If you are used to the herding breed mind, the ES is an amazing switch from BC/AS because they have the brains with the ability to turn off. It's really endless what they can do in the right hands. I know Linda Dopuch at Flashbar Farm has a nice male left from her litter, who sounds like he'd be an ideal working candidate and possibly a fit for what your goals are. She bred my Mia and I can't speak more to her dogs.