Welcome Kristina, I hear what you say about your husband and lol.... I think that is a rather common situation, you can read the post hmmmm think it is "white and now a black lol..." or something like that, there you can see that we are a few that have that very same problem with our hubbies, but chin up, we are here to support oneanother, so if a hubby is too difficult we can always put our ladylike heads together and find a way to make him give in lol....
I have two mastiffs one bullie and one OEM, but I also have two rescues they are not giants though, one Golden mix and one Siberian Husky, and yes it is soooo rewarding to work with rescue dogs, they just make your day, being so happy and thankful for everything you give them. Mind you there can also be issues with them, depending on why they are rescues. But it sounds like you have it all planned out with yard and all, and even a dog in mind.
Please keep us posted on how you do with hubby and dog
Marit