Another pointer family breed you might consider is a German Shorthaired Pointer (I am biased here - having two ourselves) . They fit in with most of your requirements. Good family dogs. They don't mind a bit of rough and tumble play, especially the boys. Their coats are very easy to maintain. A male weighs in at about 30kg and would stand at around the same height as your current dog. In terms of exercise, we do a daily walk and play a bit in the backyard with them. They also love a good run, but given the size of your property, this shouldn't be a problem - playing with your other dog and a good game of fetch perhaps? We have found they are better to be tired out with mental stimulation rather than just pure exercise. So fetch games and toys that ask more of them to win their food are good. We have two, both still very young and energetic. They are incredibly gentle with kids and love to be around the family. Their coats do shed, but a brush with one of those rubber grooming mits once a week seems to work wonders in getting rid of any coat they are shedding, which is usually very minimal. Good luck with your selection!