Bullmastiff Adult Dog Wanted

Hi. We are looking for a new member for our family. Our last three dogs have been bullmastiffs and before that we had an Akita. We are both recently retired and live on 85 acres in Jemseg with our horses and chickens. We are interested in finding a younger, large breed who would fit in with our lifestyle. The dog would rarely be left alone. We do not have Internet access, except by very sketchy phone service. If you have a dog that you think would be a good fit, please let me know. Thanks.